The code listed below has been recently approved for use in MARC 21 records. The code will be added to the online MARC Code Lists for Relators, Sources, Description Conventions.
The code should not be used in exchange records until after November 29, 2006. 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 code is for use in subfield $a in field 042 (Authentication Code) in Authority and Bibliographic 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. ([email protected]).
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( 04/05/2011 )
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