including guidelines for content designation Library of Congress Network Development and MARC Standards Office. text bibliography dcu Washington [D.C.] Cataloging Distribution Service, Library of Congress 1987- 1987 9999 monographic eng

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1 v. (loose-leaf) prepared by Network Development and MARC Standards Office. Previously published under title: Authorities, a MARC format. "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. Bibliography: introd., p. 1-2. MARC System United States Format Authority files Cataloging Data processing Standards United States Z699.4.M2 U747 1987 025.3/22 LC 1.6/4:Au8 LC 1.6/4:Au8 87600155 //r88 870430 20160527201152.0 44175