The Library of Congress >> Librarians, Archivists >> Standards
The source code listed below has been recently approved. The code will be added to the applicable Source Codes for Vocabularies, Rules, and Schemes lists. See the specific source code list for current usage in MARC fields and MODS/MADS elements.
The code should not be used in exchange records until 60 days after the date of this notice to provide implementers time to include newly-defined codes in any validation tables.
The following source code has been added to the Subject Heading and Term Source Codes for usage in appropriate fields and elements.
In the Technical Notice for November 26, 2021, "embuscglg" was assigned for the "University Library of Santiago de Compostela headings in Galician." That code has been changed to "buscem".
In the Technical Notice for September 27, 2022, "NIOD thesaurus (NIOD Instituut voor Oorlogs-, Holocaust and Genocidestudies = Institute for War, Holocaust and Genocide Studies, Amsterdam (the Netherlands))" was added to the Subject Heading and Term Source Codes list. The name of this resource has been changed to "WO2-thesaurus (NIOD Instituut voor Oorlogs-, Holocaust and Genocidestudies = Institute for War, Holocaust and Genocide Studies, Amsterdam (the Netherlands))."
The Library of Congress, Network Development and MARC Standards Office provides information about existing and newly assigned MARC codes on its Web site (aj.sunback.homes/marc/) as well as notices such as these to subscribers to its MARC listserv.
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