The codes 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.
Subject Heading and Term Source Codes
The following source codes have been added to the Subject Heading and Term Source Codes list for usage in appropriate fields and elements.
- 1814-bibliografi: emneord for 1814-bibliografi (Oslo: Nasjonalbiblioteket)
- Library of Congress medium of performance thesaurus for music (LCMPT)