USMARC format for authority data
Subtitle: including guidelines for content designation
By: prepared by Network Development and MARC Standards Office.
Contributors: Library of Congress. Network Development and MARC Standards Office.
Publisher: Cataloging Distribution Service, Library of Congress
Published: 1987
Place of publication: Washington
Language: eng
Subjects: MARC formats -- United States.; Authority files (Information retrieval) -- United States -- Data processing.
Notes: Bibliography: introd., p. 1-2.
"This document ... defines the codes and conventions (tags, indicators, subfield codes, and coded values) that identify the data elements in USMARC authority records"--Introd.
June 1987.