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TECHNICAL NOTICE (May 22, 2026) -- Revised

Additions to MARC Code List for Relators

Network Development and MARC Standards Office
Library of Congress

On May 22 "approbator [apb]" was added to the MARC Code List for Relators list. It has been changed to "writer of approbation" [wap].

• wap [writer of approbation] - A person who writes an approbation for a work.

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.

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