marc21_holdings_schema.json

{
  "title":"MARC21 holdings format",
  "url":"https:\/\/www.loc.gov\/marc\/holdings\/",
  "language":"en",
  "family":"marc",
  "fields":{
    "010":{
      "label":"Library of Congress Control Number",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"LC control number",
          "repeatable":false
        },
        "b":{
          "label":"NUCMC control number",
          "repeatable":true
        },
        "z":{
          "label":"Canceled or invalid LC control number",
          "repeatable":true
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":false
    },
    "014":{
      "label":"Linkage Number",
      "indicator1":{
        "label":"Type of linkage number",
        "codes":{
          "0":"Holdings record number",
          "1":"Bibliographic record number"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Linkage number",
          "repeatable":false
        },
        "b":{
          "label":"Source of number",
          "repeatable":false
        },
        "z":{
          "label":"Canceled or invalid linkage number",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        }
      },
      "repeatable":true
    },
    "016":{
      "label":"National Bibliographic Agency Control Number",
      "indicator1":{
        "label":"National bibliographic agency",
        "codes":{
          " ":"Library and Archives Canada",
          "7":"Source specified in subfield $2"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Record control number",
          "repeatable":false
        },
        "z":{
          "label":"Canceled or invalid control number",
          "repeatable":true
        },
        "2":{
          "label":"Source",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "017":{
      "label":"Copyright or Legal Deposit Number",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Display constant controller",
        "codes":{
          " ":"Copyright or legal deposit number",
          "8":"No display constant generated"
        }
      },
      "subfields":{
        "a":{
          "label":"Copyright or legal deposit number",
          "repeatable":true
        },
        "b":{
          "label":"Assigning agency",
          "repeatable":false
        },
        "d":{
          "label":"Date",
          "repeatable":false
        },
        "z":{
          "label":"Canceled\/invalid copyright or legal deposit number",
          "repeatable":true
        },
        "2":{
          "label":"Source",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        }
      },
      "repeatable":true
    },
    "020":{
      "label":"International Standard Book Number",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"International Standard Book Number",
          "repeatable":false
        },
        "c":{
          "label":"Terms of availability",
          "repeatable":false
        },
        "q":{
          "label":"Qualifying information",
          "repeatable":true
        },
        "z":{
          "label":"Canceled\/invalid ISBN",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "022":{
      "label":"International Standard Serial Number",
      "indicator1":{
        "label":"Level of international interest",
        "codes":{
          " ":"No level specified",
          "0":"Continuing resource of international interest",
          "1":"Continuing resource not of international interest"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"International Standard Serial Number",
          "repeatable":false
        },
        "y":{
          "label":"Incorrect ISSN",
          "repeatable":true
        },
        "z":{
          "label":"Canceled ISSN",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "023":{
      "label":"Cluster ISSN",
      "indicator1":{
        "label":"Type of Cluster ISSN",
        "codes":{
          "0":"ISSN-L",
          "1":"ISSN-H"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Cluster ISSN",
          "repeatable":false
        },
        "y":{
          "label":"Incorrect Cluster ISSN",
          "repeatable":true
        },
        "z":{
          "label":"Canceled Cluster ISSN",
          "repeatable":true
        },
        "0":{
          "label":"Authority record control number or standard number",
          "repeatable":false
        },
        "1":{
          "label":"Real World Object URI",
          "repeatable":true
        },
        "2":{
          "label":"Source",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "024":{
      "label":"Other Standard Identifier",
      "indicator1":{
        "label":"Type of standard number or code",
        "codes":{
          "0":"International Standard Recording Code",
          "1":"Universal Product Code",
          "2":"International Standard Music Number",
          "3":"International Article Number",
          "4":"Serial Item and Contribution Identifier",
          "7":"Source specified in subfield $2",
          "8":"Unspecified type of standard number or code"
        }
      },
      "indicator2":{
        "label":"Difference indicator",
        "codes":{
          " ":"No information provided",
          "0":"No difference",
          "1":"Difference"
        }
      },
      "subfields":{
        "a":{
          "label":"Standard number or code",
          "repeatable":false
        },
        "c":{
          "label":"Terms of availability",
          "repeatable":false
        },
        "d":{
          "label":"Additional codes following the standard number or code",
          "repeatable":false
        },
        "q":{
          "label":"Qualifying information",
          "repeatable":true
        },
        "z":{
          "label":"Canceled\/invalid standard number or code",
          "repeatable":true
        },
        "2":{
          "label":"Source of number or code",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "027":{
      "label":"Standard Technical Report Number",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Standard Technical Report Number",
          "repeatable":false
        },
        "q":{
          "label":"Qualifying information",
          "repeatable":true
        },
        "z":{
          "label":"Canceled\/invalid STRN",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "030":{
      "label":"CODEN Designation",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"CODEN",
          "repeatable":false
        },
        "z":{
          "label":"Canceled\/invalid CODEN",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":false
    },
    "035":{
      "label":"System Control Number",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"System control number",
          "repeatable":false
        },
        "z":{
          "label":"Canceled or invalid control number",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "040":{
      "label":"Record Source",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Original cataloging agency",
          "repeatable":false
        },
        "b":{
          "label":"Language of cataloging",
          "repeatable":false
        },
        "c":{
          "label":"Transcribing agency",
          "repeatable":false
        },
        "d":{
          "label":"Modifying agency",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":false
    },
    "066":{
      "label":"Character Sets Present",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Primary G0 character set",
          "repeatable":false
        },
        "b":{
          "label":"Primary G1 character set",
          "repeatable":false
        },
        "c":{
          "label":"Alternate G0 or G1 character set",
          "repeatable":true
        }
      },
      "repeatable":false
    },
    "337":{
      "label":"Media Type",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Media type term",
          "repeatable":true
        },
        "b":{
          "label":"Media type code",
          "repeatable":true
        },
        "0":{
          "label":"Authority record control number or standard number",
          "repeatable":true
        },
        "1":{
          "label":"Real World Object URI",
          "repeatable":true
        },
        "2":{
          "label":"Source",
          "repeatable":false
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "338":{
      "label":"Carrier Type",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Carrier type term",
          "repeatable":true
        },
        "b":{
          "label":"Carrier type code",
          "repeatable":true
        },
        "0":{
          "label":"Authority record control number or standard number",
          "repeatable":true
        },
        "1":{
          "label":"Real World Object URI",
          "repeatable":true
        },
        "2":{
          "label":"Source",
          "repeatable":false
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "347":{
      "label":"Digital File Characteristics",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"File type",
          "repeatable":true
        },
        "b":{
          "label":"Encoding format",
          "repeatable":true
        },
        "c":{
          "label":"File size",
          "repeatable":true
        },
        "d":{
          "label":"Resolution",
          "repeatable":true
        },
        "e":{
          "label":"Regional encoding",
          "repeatable":true
        },
        "f":{
          "label":"Encoded bitrate",
          "repeatable":true
        },
        "0":{
          "label":"Authority record control number or standard number",
          "repeatable":true
        },
        "1":{
          "label":"Real World Object URI",
          "repeatable":true
        },
        "2":{
          "label":"Source",
          "repeatable":false
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "361":{
      "label":"Structured Ownership and Custodial History",
      "indicator1":{
        "label":"Privacy",
        "codes":{
          " ":"No information provided",
          "0":"Private",
          "1":"Not private"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Name",
          "repeatable":false
        },
        "f":{
          "label":"Ownership and custodial history evidence term",
          "repeatable":true
        },
        "k":{
          "label":"Formatted date",
          "repeatable":false
        },
        "l":{
          "label":"Date",
          "repeatable":false
        },
        "o":{
          "label":"Type of ownership and custodial history information",
          "repeatable":true
        },
        "s":{
          "label":"Shelf mark of copy described",
          "repeatable":false
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        },
        "x":{
          "label":"Nonpublic note",
          "repeatable":true
        },
        "y":{
          "label":"Identifier of the copy described",
          "repeatable":false
        },
        "z":{
          "label":"Public note",
          "repeatable":true
        },
        "0":{
          "label":"Authority record control number or standard number",
          "repeatable":true
        },
        "1":{
          "label":"Real World Object URI",
          "repeatable":true
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "7":{
          "label":"Data provenance",
          "repeatable":true
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "506":{
      "label":"Restrictions on Access Note",
      "indicator1":{
        "label":"Restriction",
        "codes":{
          " ":"No information provided",
          "0":"No restrictions",
          "1":"Restrictions apply"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Terms governing access",
          "repeatable":false
        },
        "b":{
          "label":"Jurisdiction",
          "repeatable":true
        },
        "c":{
          "label":"Physical access provisions",
          "repeatable":true
        },
        "d":{
          "label":"Authorized users",
          "repeatable":true
        },
        "e":{
          "label":"Authorization",
          "repeatable":true
        },
        "f":{
          "label":"Standardized terminology for access restriction",
          "repeatable":true
        },
        "g":{
          "label":"Availability date",
          "repeatable":true
        },
        "q":{
          "label":"Supplying agency",
          "repeatable":false
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        },
        "2":{
          "label":"Source of term",
          "repeatable":false
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "538":{
      "label":"System Details Note",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"System details note",
          "repeatable":false
        },
        "i":{
          "label":"Display text",
          "repeatable":false
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "541":{
      "label":"Immediate Source of Acquisition Note",
      "indicator1":{
        "label":"Privacy",
        "codes":{
          " ":"No information provided",
          "0":"Private",
          "1":"Not private"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Source of acquisition",
          "repeatable":false
        },
        "b":{
          "label":"Address",
          "repeatable":false
        },
        "c":{
          "label":"Method of acquisition",
          "repeatable":false
        },
        "d":{
          "label":"Date of acquisition",
          "repeatable":false
        },
        "e":{
          "label":"Accession number",
          "repeatable":false
        },
        "f":{
          "label":"Owner",
          "repeatable":false
        },
        "h":{
          "label":"Purchase price",
          "repeatable":false
        },
        "n":{
          "label":"Extent",
          "repeatable":true
        },
        "o":{
          "label":"Type of unit",
          "repeatable":true
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "561":{
      "label":"Ownership and Custodial History",
      "indicator1":{
        "label":"Privacy",
        "codes":{
          " ":"No information provided",
          "0":"Private",
          "1":"Not private"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"History",
          "repeatable":false
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "562":{
      "label":"Copy and Version Identification Note",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Identifying markings",
          "repeatable":true
        },
        "b":{
          "label":"Copy identification",
          "repeatable":true
        },
        "c":{
          "label":"Version identification",
          "repeatable":true
        },
        "d":{
          "label":"Presentation format",
          "repeatable":true
        },
        "e":{
          "label":"Number of copies",
          "repeatable":true
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "563":{
      "label":"Binding Information",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Binding note",
          "repeatable":false
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "583":{
      "label":"Action Note",
      "indicator1":{
        "label":"Privacy",
        "codes":{
          " ":"No information provided",
          "0":"Private",
          "1":"Not private"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Action",
          "repeatable":false
        },
        "b":{
          "label":"Action identification",
          "repeatable":true
        },
        "c":{
          "label":"Time\/date of action",
          "repeatable":true
        },
        "d":{
          "label":"Action interval",
          "repeatable":true
        },
        "e":{
          "label":"Contingency for action",
          "repeatable":true
        },
        "f":{
          "label":"Authorization",
          "repeatable":true
        },
        "h":{
          "label":"Jurisdiction",
          "repeatable":true
        },
        "i":{
          "label":"Method of action",
          "repeatable":true
        },
        "j":{
          "label":"Site of action",
          "repeatable":true
        },
        "k":{
          "label":"Action agent",
          "repeatable":true
        },
        "l":{
          "label":"Status",
          "repeatable":true
        },
        "n":{
          "label":"Extent",
          "repeatable":true
        },
        "o":{
          "label":"Type of unit",
          "repeatable":true
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        },
        "x":{
          "label":"Nonpublic note",
          "repeatable":true
        },
        "z":{
          "label":"Public note",
          "repeatable":true
        },
        "2":{
          "label":"Source of term",
          "repeatable":false
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "841":{
      "label":"Holdings Coded Data Values",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Type of record",
          "repeatable":false
        },
        "b":{
          "label":"Fixed-length data elements",
          "repeatable":false
        },
        "e":{
          "label":"Encoding level",
          "repeatable":false
        }
      },
      "repeatable":false
    },
    "842":{
      "label":"Textual Physical Form Designator",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Textual physical form designator",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":false
    },
    "843":{
      "label":"Reproduction Note",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Type of reproduction",
          "repeatable":false
        },
        "b":{
          "label":"Place of reproduction",
          "repeatable":true
        },
        "c":{
          "label":"Agency responsible for reproduction",
          "repeatable":true
        },
        "d":{
          "label":"Date of reproduction",
          "repeatable":false
        },
        "e":{
          "label":"Physical description of reproduction",
          "repeatable":false
        },
        "f":{
          "label":"Series statement of reproduction",
          "repeatable":true
        },
        "m":{
          "label":"Dates of publication and\/or sequential designation of issues reproduced",
          "repeatable":true
        },
        "n":{
          "label":"Note about reproduction",
          "repeatable":true
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "7":{
          "label":"Fixed-length data elements of reproduction",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "844":{
      "label":"Name of Unit",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Name of unit",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":false
    },
    "845":{
      "label":"Terms Governing Use and Reproduction Note",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Terms governing use and reproduction",
          "repeatable":false
        },
        "b":{
          "label":"Jurisdiction",
          "repeatable":false
        },
        "c":{
          "label":"Authorization",
          "repeatable":false
        },
        "d":{
          "label":"Authorized users",
          "repeatable":false
        },
        "f":{
          "label":"Use and reproduction rights",
          "repeatable":true
        },
        "g":{
          "label":"Availability date",
          "repeatable":true
        },
        "q":{
          "label":"Supplying agency",
          "repeatable":false
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        },
        "2":{
          "label":"Source of term",
          "repeatable":false
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "852":{
      "label":"Location",
      "indicator1":{
        "label":"Shelving scheme",
        "codes":{
          " ":"No information provided",
          "0":"Library of Congress classification",
          "1":"Dewey Decimal classification",
          "2":"National Library of Medicine classification",
          "3":"Superintendent of Documents classification",
          "4":"Shelving control number",
          "5":"Title",
          "6":"Shelved separately",
          "7":"Source specified in subfield $2",
          "8":"Other scheme"
        }
      },
      "indicator2":{
        "label":"Shelving order",
        "codes":{
          " ":"No information provided",
          "0":"Not enumeration",
          "1":"Primary enumeration",
          "2":"Alternative enumeration"
        }
      },
      "subfields":{
        "a":{
          "label":"Location",
          "repeatable":false
        },
        "b":{
          "label":"Sublocation or collection",
          "repeatable":true
        },
        "c":{
          "label":"Shelving location",
          "repeatable":true
        },
        "d":{
          "label":"Former shelving location",
          "repeatable":true
        },
        "e":{
          "label":"Address",
          "repeatable":true
        },
        "f":{
          "label":"Coded location qualifier",
          "repeatable":true
        },
        "g":{
          "label":"Non-coded location qualifier",
          "repeatable":true
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        },
        "h":{
          "label":"Classification part",
          "repeatable":false
        },
        "i":{
          "label":"Item part",
          "repeatable":true
        },
        "j":{
          "label":"Shelving control number",
          "repeatable":false
        },
        "k":{
          "label":"Call number prefix",
          "repeatable":true
        },
        "l":{
          "label":"Shelving form of title",
          "repeatable":false
        },
        "m":{
          "label":"Call number suffix",
          "repeatable":true
        },
        "n":{
          "label":"Country code",
          "repeatable":false
        },
        "s":{
          "label":"Copyright article-fee code",
          "repeatable":true
        },
        "t":{
          "label":"Copy number",
          "repeatable":false
        },
        "p":{
          "label":"Piece designation",
          "repeatable":false
        },
        "q":{
          "label":"Piece physical condition",
          "repeatable":false
        },
        "x":{
          "label":"Nonpublic note",
          "repeatable":true
        },
        "z":{
          "label":"Public note",
          "repeatable":true
        },
        "2":{
          "label":"Source of classification or shelving scheme",
          "repeatable":false
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Sequence number",
          "repeatable":false
        }
      },
      "repeatable":true
    },
    "853":{
      "label":"Captions and Pattern-Basic Bibliographic Unit",
      "indicator1":{
        "label":"Compressibility and expandability",
        "codes":{
          "0":"Cannot compress or expand",
          "1":"Can compress but not expand",
          "2":"Can compress or expand",
          "3":"Unknown",
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Caption evaluation",
        "codes":{
          "0":"Captions verified; all levels present",
          "1":"Captions verified; all levels may not be present",
          "2":"Captions unverified; all levels present",
          "3":"Captions unverified; all levels may not be present",
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"First level of enumeration",
          "repeatable":false
        },
        "b":{
          "label":"Second level of enumeration",
          "repeatable":false
        },
        "c":{
          "label":"Third level of enumeration",
          "repeatable":false
        },
        "d":{
          "label":"Fourth level of enumeration",
          "repeatable":false
        },
        "e":{
          "label":"Fifth level of enumeration",
          "repeatable":false
        },
        "f":{
          "label":"Sixth level of enumeration",
          "repeatable":false
        },
        "g":{
          "label":"Alternative numbering scheme, first level of enumeration",
          "repeatable":false
        },
        "h":{
          "label":"Alternative numbering scheme, second level of enumeration",
          "repeatable":false
        },
        "i":{
          "label":"First level of chronology",
          "repeatable":false
        },
        "j":{
          "label":"Second level of chronology",
          "repeatable":false
        },
        "k":{
          "label":"Third level of chronology",
          "repeatable":false
        },
        "l":{
          "label":"Fourth level of chronology",
          "repeatable":false
        },
        "m":{
          "label":"Alternative numbering scheme, chronology",
          "repeatable":false
        },
        "n":{
          "label":"Pattern note",
          "repeatable":false
        },
        "p":{
          "label":"Number of pieces per issuance",
          "repeatable":false
        },
        "u":{
          "label":"Bibliographic units per next higher level",
          "repeatable":true
        },
        "v":{
          "label":"Numbering continuity",
          "repeatable":true
        },
        "w":{
          "label":"Frequency",
          "repeatable":false
        },
        "x":{
          "label":"Calendar change",
          "repeatable":false
        },
        "y":{
          "label":"Regularity pattern",
          "repeatable":true
        },
        "z":{
          "label":"Numbering scheme",
          "repeatable":true
        },
        "o":{
          "label":"Type of unit",
          "repeatable":true
        },
        "t":{
          "label":"Copy",
          "repeatable":false
        },
        "2":{
          "label":"Source of caption abbreviation",
          "repeatable":true
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":false
        }
      },
      "repeatable":true
    },
    "854":{
      "label":"Captions and Pattern-Supplementary Material",
      "indicator1":{
        "label":"Compressibility and expandability",
        "codes":{
          "0":"Cannot compress or expand",
          "1":"Can compress but not expand",
          "2":"Can compress or expand",
          "3":"Unknown",
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Caption evaluation",
        "codes":{
          "0":"Captions verified; all levels present",
          "1":"Captions verified; all levels may not be present",
          "2":"Captions unverified; all levels present",
          "3":"Captions unverified; all levels may not be present",
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"First level of enumeration",
          "repeatable":false
        },
        "b":{
          "label":"Second level of enumeration",
          "repeatable":false
        },
        "c":{
          "label":"Third level of enumeration",
          "repeatable":false
        },
        "d":{
          "label":"Fourth level of enumeration",
          "repeatable":false
        },
        "e":{
          "label":"Fifth level of enumeration",
          "repeatable":false
        },
        "f":{
          "label":"Sixth level of enumeration",
          "repeatable":false
        },
        "g":{
          "label":"Alternative numbering scheme, first level of enumeration",
          "repeatable":false
        },
        "h":{
          "label":"Alternative numbering scheme, second level of enumeration",
          "repeatable":false
        },
        "i":{
          "label":"First level of chronology",
          "repeatable":false
        },
        "j":{
          "label":"Second level of chronology",
          "repeatable":false
        },
        "k":{
          "label":"Third level of chronology",
          "repeatable":false
        },
        "l":{
          "label":"Fourth level of chronology",
          "repeatable":false
        },
        "m":{
          "label":"Alternative numbering scheme, chronology",
          "repeatable":false
        },
        "n":{
          "label":"Pattern note",
          "repeatable":false
        },
        "p":{
          "label":"Number of pieces per issuance",
          "repeatable":false
        },
        "u":{
          "label":"Bibliographic units per next higher level",
          "repeatable":true
        },
        "v":{
          "label":"Numbering continuity",
          "repeatable":true
        },
        "w":{
          "label":"Frequency",
          "repeatable":false
        },
        "x":{
          "label":"Calendar change",
          "repeatable":false
        },
        "y":{
          "label":"Regularity pattern",
          "repeatable":true
        },
        "z":{
          "label":"Numbering scheme",
          "repeatable":true
        },
        "o":{
          "label":"Type of unit",
          "repeatable":true
        },
        "t":{
          "label":"Copy",
          "repeatable":false
        },
        "2":{
          "label":"Source of caption abbreviation",
          "repeatable":true
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":false
        }
      },
      "repeatable":true
    },
    "855":{
      "label":"Captions and Pattern-Indexes",
      "indicator1":{
        "label":"Compressibility and expandability",
        "codes":{
          "0":"Cannot compress or expand",
          "1":"Can compress but not expand",
          "2":"Can compress or expand",
          "3":"Unknown",
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Caption evaluation",
        "codes":{
          "0":"Captions verified; all levels present",
          "1":"Captions verified; all levels may not be present",
          "2":"Captions unverified; all levels present",
          "3":"Captions unverified; all levels may not be present",
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"First level of enumeration",
          "repeatable":false
        },
        "b":{
          "label":"Second level of enumeration",
          "repeatable":false
        },
        "c":{
          "label":"Third level of enumeration",
          "repeatable":false
        },
        "d":{
          "label":"Fourth level of enumeration",
          "repeatable":false
        },
        "e":{
          "label":"Fifth level of enumeration",
          "repeatable":false
        },
        "f":{
          "label":"Sixth level of enumeration",
          "repeatable":false
        },
        "g":{
          "label":"Alternative numbering scheme, first level of enumeration",
          "repeatable":false
        },
        "h":{
          "label":"Alternative numbering scheme, second level of enumeration",
          "repeatable":false
        },
        "i":{
          "label":"First level of chronology",
          "repeatable":false
        },
        "j":{
          "label":"Second level of chronology",
          "repeatable":false
        },
        "k":{
          "label":"Third level of chronology",
          "repeatable":false
        },
        "l":{
          "label":"Fourth level of chronology",
          "repeatable":false
        },
        "m":{
          "label":"Alternative numbering scheme, chronology",
          "repeatable":false
        },
        "n":{
          "label":"Pattern note",
          "repeatable":false
        },
        "p":{
          "label":"Number of pieces per issuance",
          "repeatable":false
        },
        "u":{
          "label":"Bibliographic units per next higher level",
          "repeatable":true
        },
        "v":{
          "label":"Numbering continuity",
          "repeatable":true
        },
        "w":{
          "label":"Frequency",
          "repeatable":false
        },
        "x":{
          "label":"Calendar change",
          "repeatable":false
        },
        "y":{
          "label":"Regularity pattern",
          "repeatable":true
        },
        "z":{
          "label":"Numbering scheme",
          "repeatable":true
        },
        "o":{
          "label":"Type of unit",
          "repeatable":true
        },
        "t":{
          "label":"Copy",
          "repeatable":false
        },
        "2":{
          "label":"Source of caption abbreviation",
          "repeatable":true
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":false
        }
      },
      "repeatable":true
    },
    "856":{
      "label":"Electronic Location and Access",
      "indicator1":{
        "label":"Access method",
        "codes":{
          " ":"No information provided",
          "0":"Email",
          "1":"FTP",
          "2":"Remote login (Telnet)",
          "3":"Dial-up",
          "4":"HTTP",
          "7":"Method specified in subfield $2"
        }
      },
      "indicator2":{
        "label":"Relationship",
        "codes":{
          " ":"No information provided",
          "0":"Resource",
          "1":"Version of resource",
          "2":"Related resource",
          "3":"Component part(s) of resource",
          "4":"Version of component part(s) of resource",
          "8":"No display constant generated"
        }
      },
      "subfields":{
        "a":{
          "label":"Host name",
          "repeatable":true
        },
        "c":{
          "label":"Compression information",
          "repeatable":true
        },
        "d":{
          "label":"Path",
          "repeatable":true
        },
        "f":{
          "label":"Electronic name",
          "repeatable":true
        },
        "g":{
          "label":"Persistent identifier",
          "repeatable":true
        },
        "h":{
          "label":"Non-functioning Uniform Resource Identifier",
          "repeatable":true
        },
        "l":{
          "label":"Standardized information governing access",
          "repeatable":true
        },
        "m":{
          "label":"Contact for access assistance",
          "repeatable":true
        },
        "n":{
          "label":"Terms governing access",
          "repeatable":true
        },
        "o":{
          "label":"Operating system",
          "repeatable":false
        },
        "p":{
          "label":"Port",
          "repeatable":false
        },
        "q":{
          "label":"Electronic format type",
          "repeatable":true
        },
        "r":{
          "label":"Standardized information governing use and reproduction",
          "repeatable":true
        },
        "s":{
          "label":"File size",
          "repeatable":true
        },
        "t":{
          "label":"Terms governing use and reproduction",
          "repeatable":true
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        },
        "v":{
          "label":"Hours access method available",
          "repeatable":true
        },
        "w":{
          "label":"Record control number",
          "repeatable":true
        },
        "x":{
          "label":"Nonpublic note",
          "repeatable":true
        },
        "y":{
          "label":"Link text",
          "repeatable":true
        },
        "z":{
          "label":"Public note",
          "repeatable":true
        },
        "2":{
          "label":"Access method",
          "repeatable":false
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "7":{
          "label":"Access status",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "857":{
      "label":"Electronic Archive Location and Access",
      "indicator1":{
        "label":"Access method",
        "codes":{
          " ":"No information provided",
          "1":"FTP",
          "4":"HTTP",
          "7":"Method specified in subfield $2"
        }
      },
      "indicator2":{
        "label":"Relationship",
        "codes":{
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          "0":"Resource",
          "1":"Version of resource",
          "2":"Related resource",
          "3":"Component part(s) of resource",
          "4":"Version of component part(s) of resource",
          "8":"No display constant generated"
        }
      },
      "subfields":{
        "b":{
          "label":"Name of archiving agency",
          "repeatable":false
        },
        "c":{
          "label":"Name of Web archive or digital archive repository",
          "repeatable":false
        },
        "d":{
          "label":"Date range of archived material",
          "repeatable":false
        },
        "f":{
          "label":"Archive completeness",
          "repeatable":false
        },
        "g":{
          "label":"Persistent identifier",
          "repeatable":true
        },
        "h":{
          "label":"Non-functioning Uniform Resource Identifier",
          "repeatable":true
        },
        "l":{
          "label":"Standardized information governing access",
          "repeatable":true
        },
        "m":{
          "label":"Contact for access assistance",
          "repeatable":true
        },
        "n":{
          "label":"Terms governing access",
          "repeatable":true
        },
        "q":{
          "label":"Electronic format type",
          "repeatable":true
        },
        "r":{
          "label":"Standardized information governing use and reproduction",
          "repeatable":true
        },
        "s":{
          "label":"File size",
          "repeatable":true
        },
        "t":{
          "label":"Terms governing use and reproduction",
          "repeatable":true
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        },
        "x":{
          "label":"Nonpublic note",
          "repeatable":true
        },
        "y":{
          "label":"Link text",
          "repeatable":true
        },
        "z":{
          "label":"Public note",
          "repeatable":true
        },
        "2":{
          "label":"Access method",
          "repeatable":false
        },
        "3":{
          "label":"Materials specified",
          "repeatable":false
        },
        "5":{
          "label":"Institution to which field applies",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "7":{
          "label":"Access status",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "863":{
      "label":"Enumeration and Chronology-Basic Bibliographic Unit",
      "indicator1":{
        "label":"Field encoding level",
        "codes":{
          " ":"No information provided",
          "3":"Holdings level 3",
          "4":"Holdings level 4",
          "5":"Holdings level 4 with piece designation"
        }
      },
      "indicator2":{
        "label":"Form of holdings",
        "codes":{
          " ":"No information provided",
          "0":"Compressed",
          "1":"Uncompressed",
          "2":"Compressed, use textual display",
          "3":"Uncompressed, use textual display",
          "4":"Item(s) not published"
        }
      },
      "subfields":{
        "a":{
          "label":"First level of enumeration",
          "repeatable":false
        },
        "b":{
          "label":"Second level of enumeration",
          "repeatable":false
        },
        "c":{
          "label":"Third level of enumeration",
          "repeatable":false
        },
        "d":{
          "label":"Fourth level of enumeration",
          "repeatable":false
        },
        "e":{
          "label":"Fifth level of enumeration",
          "repeatable":false
        },
        "f":{
          "label":"Sixth level of enumeration",
          "repeatable":false
        },
        "g":{
          "label":"Alternative numbering scheme, first level of enumeration",
          "repeatable":false
        },
        "h":{
          "label":"Alternative numbering scheme, second level of enumeration",
          "repeatable":false
        },
        "i":{
          "label":"First level of chronology",
          "repeatable":false
        },
        "j":{
          "label":"Second level of chronology",
          "repeatable":false
        },
        "k":{
          "label":"Third level of chronology",
          "repeatable":false
        },
        "l":{
          "label":"Fourth level of chronology",
          "repeatable":false
        },
        "m":{
          "label":"Alternative numbering scheme, chronology",
          "repeatable":false
        },
        "n":{
          "label":"Converted Gregorian year",
          "repeatable":false
        },
        "o":{
          "label":"Title of unit",
          "repeatable":true
        },
        "p":{
          "label":"Piece designation",
          "repeatable":false
        },
        "q":{
          "label":"Piece physical condition",
          "repeatable":false
        },
        "s":{
          "label":"Copyright article-fee code",
          "repeatable":true
        },
        "t":{
          "label":"Copy number",
          "repeatable":false
        },
        "w":{
          "label":"Break indicator",
          "repeatable":false
        },
        "x":{
          "label":"Nonpublic note",
          "repeatable":true
        },
        "z":{
          "label":"Public note",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":false
        }
      },
      "repeatable":true
    },
    "864":{
      "label":"Enumeration and Chronology-Supplementary Material",
      "indicator1":{
        "label":"Field encoding level",
        "codes":{
          " ":"No information provided",
          "3":"Holdings level 3",
          "4":"Holdings level 4",
          "5":"Holdings level 4 with piece designation"
        }
      },
      "indicator2":{
        "label":"Form of holdings",
        "codes":{
          " ":"No information provided",
          "0":"Compressed",
          "1":"Uncompressed",
          "2":"Compressed, use textual display",
          "3":"Uncompressed, use textual display",
          "4":"Item(s) not published"
        }
      },
      "subfields":{
        "a":{
          "label":"First level of enumeration",
          "repeatable":false
        },
        "b":{
          "label":"Second level of enumeration",
          "repeatable":false
        },
        "c":{
          "label":"Third level of enumeration",
          "repeatable":false
        },
        "d":{
          "label":"Fourth level of enumeration",
          "repeatable":false
        },
        "e":{
          "label":"Fifth level of enumeration",
          "repeatable":false
        },
        "f":{
          "label":"Sixth level of enumeration",
          "repeatable":false
        },
        "g":{
          "label":"Alternative numbering scheme, first level of enumeration",
          "repeatable":false
        },
        "h":{
          "label":"Alternative numbering scheme, second level of enumeration",
          "repeatable":false
        },
        "i":{
          "label":"First level of chronology",
          "repeatable":false
        },
        "j":{
          "label":"Second level of chronology",
          "repeatable":false
        },
        "k":{
          "label":"Third level of chronology",
          "repeatable":false
        },
        "l":{
          "label":"Fourth level of chronology",
          "repeatable":false
        },
        "m":{
          "label":"Alternative numbering scheme, chronology",
          "repeatable":false
        },
        "n":{
          "label":"Converted Gregorian year",
          "repeatable":false
        },
        "o":{
          "label":"Title of unit",
          "repeatable":true
        },
        "p":{
          "label":"Piece designation",
          "repeatable":false
        },
        "q":{
          "label":"Piece physical condition",
          "repeatable":false
        },
        "s":{
          "label":"Copyright article-fee code",
          "repeatable":true
        },
        "t":{
          "label":"Copy number",
          "repeatable":false
        },
        "w":{
          "label":"Break indicator",
          "repeatable":false
        },
        "x":{
          "label":"Nonpublic note",
          "repeatable":true
        },
        "z":{
          "label":"Public note",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":false
        }
      },
      "repeatable":true
    },
    "865":{
      "label":"Enumeration and Chronology-Indexes",
      "indicator1":{
        "label":"Field encoding level",
        "codes":{
          " ":"No information provided",
          "4":"Holdings level 4",
          "5":"Holdings level 4 with piece designation"
        }
      },
      "indicator2":{
        "label":"Form of holdings",
        "codes":{
          " ":"No information provided",
          "1":"Uncompressed",
          "3":"Uncompressed, use textual display"
        }
      },
      "subfields":{
        "a":{
          "label":"First level of enumeration",
          "repeatable":false
        },
        "b":{
          "label":"Second level of enumeration",
          "repeatable":false
        },
        "c":{
          "label":"Third level of enumeration",
          "repeatable":false
        },
        "d":{
          "label":"Fourth level of enumeration",
          "repeatable":false
        },
        "e":{
          "label":"Fifth level of enumeration",
          "repeatable":false
        },
        "f":{
          "label":"Sixth level of enumeration",
          "repeatable":false
        },
        "g":{
          "label":"Alternative numbering scheme, first level of enumeration",
          "repeatable":false
        },
        "h":{
          "label":"Alternative numbering scheme, second level of enumeration",
          "repeatable":false
        },
        "i":{
          "label":"First level of chronology",
          "repeatable":false
        },
        "j":{
          "label":"Second level of chronology",
          "repeatable":false
        },
        "k":{
          "label":"Third level of chronology",
          "repeatable":false
        },
        "l":{
          "label":"Fourth level of chronology",
          "repeatable":false
        },
        "m":{
          "label":"Alternative numbering scheme, chronology",
          "repeatable":false
        },
        "v":{
          "label":"Issuing date",
          "repeatable":true
        },
        "n":{
          "label":"Converted Gregorian year",
          "repeatable":false
        },
        "o":{
          "label":"Title of unit",
          "repeatable":true
        },
        "p":{
          "label":"Piece designation",
          "repeatable":false
        },
        "q":{
          "label":"Piece physical condition",
          "repeatable":false
        },
        "s":{
          "label":"Copyright article-fee code",
          "repeatable":true
        },
        "t":{
          "label":"Copy number",
          "repeatable":false
        },
        "w":{
          "label":"Break indicator",
          "repeatable":false
        },
        "x":{
          "label":"Nonpublic note",
          "repeatable":true
        },
        "z":{
          "label":"Public note",
          "repeatable":true
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":false
        }
      },
      "repeatable":true
    },
    "866":{
      "label":"Textual Holdings-Basic Bibliographic Unit",
      "indicator1":{
        "label":"Field encoding level",
        "codes":{
        }
      },
      "indicator2":{
        "label":"Type of notation",
        "codes":{
        }
      },
      "repeatable":true
    },
    "867":{
      "label":"Textual Holdings-Supplementary Material",
      "indicator1":{
        "label":"Field encoding level",
        "codes":{
        }
      },
      "indicator2":{
        "label":"Type of notation",
        "codes":{
        }
      },
      "repeatable":true
    },
    "868":{
      "label":"Textual Holdings-Indexes",
      "indicator1":{
        "label":"Field encoding level",
        "codes":{
        }
      },
      "indicator2":{
        "label":"Type of notation",
        "codes":{
        }
      },
      "repeatable":true
    },
    "876":{
      "label":"Item Information-Basic Bibliographic Unit",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "repeatable":true
    },
    "877":{
      "label":"Item Information-Supplementary Material",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "repeatable":true
    },
    "878":{
      "label":"Item Information-Indexes",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "repeatable":true
    },
    "880":{
      "label":"Alternate Graphic Representation",
      "indicator1":{
        "label":"Same as associated field",
        "codes":{
        }
      },
      "indicator2":{
        "label":"Same as associated field",
        "codes":{
        }
      },
      "subfields":{
        "a-$z":{
          "label":"",
          "repeatable":false
        },
        "0-$5":{
          "label":"",
          "repeatable":false
        },
        "7-$9":{
          "label":"",
          "repeatable":false
        },
        "6":{
          "label":"Linkage",
          "repeatable":false
        }
      },
      "repeatable":true
    },
    "883":{
      "label":"Metadata Provenance",
      "indicator1":{
        "label":"Method of assignment",
        "codes":{
          " ":"No information provided\/not applicable",
          "0":"Fully machine-generated",
          "1":"Partially machine-generated",
          "2":"Not machine-generated"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Creation process",
          "repeatable":false
        },
        "c":{
          "label":"Confidence value",
          "repeatable":false
        },
        "d":{
          "label":"Creation date",
          "repeatable":false
        },
        "q":{
          "label":"Assigning or generating agency",
          "repeatable":false
        },
        "x":{
          "label":"Validity end date",
          "repeatable":false
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":false
        },
        "w":{
          "label":"Bibliographic record control number",
          "repeatable":true
        },
        "0":{
          "label":"Authority record control number or standard number",
          "repeatable":true
        },
        "1":{
          "label":"Real World Object URI",
          "repeatable":true
        },
        "8":{
          "label":"Field link and sequence number",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "884":{
      "label":"Description Conversion Information",
      "indicator1":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "indicator2":{
        "label":"Undefined",
        "codes":{
          " ":"Undefined"
        }
      },
      "subfields":{
        "a":{
          "label":"Conversion process",
          "repeatable":false
        },
        "g":{
          "label":"Conversion date",
          "repeatable":false
        },
        "k":{
          "label":"Identifier of source metadata",
          "repeatable":false
        },
        "q":{
          "label":"Conversion agency",
          "repeatable":false
        },
        "u":{
          "label":"Uniform Resource Identifier",
          "repeatable":true
        }
      },
      "repeatable":true
    },
    "LDR":{
      "label":"Leader",
      "positions":{
        "0-4":{
          "label":"Record length",
          "start":0,
          "end":4,
          "codes":{
          }
        },
        "5-5":{
          "label":"Record status",
          "start":5,
          "end":5,
          "codes":{
            "c":"Corrected or revised",
            "d":"Deleted",
            "n":"New"
          }
        },
        "6-6":{
          "label":"Type of record",
          "start":6,
          "end":6,
          "codes":{
            "u":"Unknown",
            "v":"Multipart item holdings",
            "x":"Single-part item holdings",
            "y":"Serial item holdings"
          }
        },
        "7-8":{
          "label":"Undefined character positions",
          "start":7,
          "end":8,
          "codes":{
            " ":"Undefined"
          }
        },
        "9-9":{
          "label":"Character coding scheme",
          "start":9,
          "end":9,
          "codes":{
            " ":"MARC-8",
            "a":"UCS\/Unicode"
          }
        },
        "10-10":{
          "label":"Indicator count",
          "start":10,
          "end":10,
          "codes":{
            "2":"Number of character positions used for indicators"
          }
        },
        "11-11":{
          "label":"Subfield code length",
          "start":11,
          "end":11,
          "codes":{
            "2":"Number of character positions used for a subfield code"
          }
        },
        "12-16":{
          "label":"Base address of data",
          "start":12,
          "end":16,
          "codes":{
            "[number]":"Length of Leader and Directory"
          }
        },
        "17-17":{
          "label":"Encoding level",
          "start":17,
          "end":17,
          "codes":{
            "1":"Holdings level 1",
            "2":"Holdings level 2",
            "3":"Holdings level 3",
            "4":"Holdings level 4",
            "5":"Holdings level 4 with piece designation",
            "m":"Mixed level",
            "u":"Unknown",
            "z":"Other level"
          }
        },
        "18-18":{
          "label":"Item information in record",
          "start":18,
          "end":18,
          "codes":{
            "i":"Item information",
            "n":"No item information"
          }
        },
        "19-19":{
          "label":"Undefined character position",
          "start":19,
          "end":19,
          "codes":{
            " ":"Undefined"
          }
        },
        "20-20":{
          "label":"Length of the length-of-field portion",
          "start":20,
          "end":20,
          "codes":{
            "4":"Number of characters in the length-of-field portion of a Directory entry"
          }
        },
        "21-21":{
          "label":"Length of the starting-character-position portion",
          "start":21,
          "end":21,
          "codes":{
            "5":"Number of characters in the starting-character-position portion of a Directory"
          }
        },
        "22-22":{
          "label":"Length of the implementation-defined portion",
          "start":22,
          "end":22,
          "codes":{
            "0":"Number of characters in the implementation-defined portion of a Directory entry"
          }
        },
        "23-23":{
          "label":"Undefined",
          "start":23,
          "end":23,
          "codes":{
            "0":"Undefined"
          }
        }
      },
      "repeatable":false
    },
    "001":{
      "label":"Control Number",
      "repeatable":false
    },
    "003":{
      "label":"Control Number Identifier",
      "repeatable":false
    },
    "005":{
      "label":"Date and Time of Latest Transaction",
      "repeatable":false
    }
  }
}