The Library of Congress >> Librarians, Archivists >> Standards
The codes listed below have been recently approved for use in MARC 21 records. The codes will be added to MARC Code Lists for Relators, Sources, Description Conventions.
The codes should not be used in exchange records until after December 26, 2009. This 60-day waiting period is required to provide MARC 21 implementers time to include newly-defined codes in any validation tables they may apply to the MARC fields where the codes are used.
The following codes are for use in subfield $2 in field 084 in Bibliographic and Community Information records (Other Classification Number), in subfield $2 in field 084 in Classification records (Classification Scheme and Edition) and in subfield $2 in field 065 in Authority records (Other Classification Number).
The following code may be used in subfield $2 in field 043 in Bibliographic, Authority and Community Information records (Geographic Area Code).
The following code may be used in subfield $2 in fields 600-657 (Subject Added Entries/Index Terms) in Bibliographic and Community Information records; subfield 662 (Subject Added Entry) in Bibliographic records; subfield $2 in fields 700-754 (Index Terms) in Classification records; subfield $2 in fields 700-788 (Heading Linking Entries) in Authority records; and subfield $f in field 040 (Cataloging Source) in Authority records.
The Library of Congress, Network Development and MARC Standards Office provides information about existing and newly assigned MARC codes on its Web site (www.loc.gov/marc/) as well as notices such as these to subscribers to its MARC listserv (marc@loc.gov).
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