TECHNICAL NOTICE (January 17, 2003)

Additions to the MARC Code Lists for Relators, Sources, Description Conventions

Network Development and MARC Standards Office
Library of Congress

The codes listed below have been recently approved for use in MARC 21 records. They include 1 classification scheme source code, 3 subject source codes, and 1 source code for the preferred citation of described materials. These new codes will be added to the online MARC Codes Lists for Relators, Sources, Description Conventions. The codes should not be used in exchange records until after March 10, 2003. This 60-day waiting period is required to provide MARC 21 implementers with time to include newly defined codes in any validation tables they may apply to the MARC fields where these codes are used.

In addition to new codes, definitions were added to 22 existing relator codes, which were previously listed without explanatory text. These definitions were added to facilitate their use by other communities.

• MARC Classification Scheme Sources
  Changes:
  cutterec - Cutter, Charles Ammi. Expansive classification (subfield $2 in Bibliographic and Authority field 084, Authority fields 065, and Bibliographic/Holdings field 852)[use after March 10, 2003]
  All codes valid for subfield $2 in Authority field 086 should be validated for subfield $2 in Authority field 087 as well.
• MARC Term, Name, Title Sources
  Changes:
  ica - Index of Christian art (subfield $2 in Bibliographic and Community Information records in fields 600-651, 655-658) [use after March 10, 2003]
  marcgt - MARC genre terms (subfield $2 in Bibliographic and Community Information records in fields 655) [use after March 10, 2003]
  moss - Missouri show-me standards (subfield $2 in Bibliographic and Community Information records in fields 658) [use after March 10, 2003]
• MARC Other Sourcs
  Changes:
  nlmrfbc- National Library of Medicine recommended formats for bibliographic citation (subfield $2 in Bibliographic records in field 524) [use after March 10, 2003]
  Authentication codes used in subfield $a in Bibliographic and Authority field 042 are now published as a PART VII code list.

The Library of Congress, Network Development and MARC Standards Office provides information about existing and newly assigned MARC codes on its Web site (http://www.loc.gov/marc/) as well as notices such as these to subscribers to its "MARC" electronic list (marc@loc.gov).

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