USMARC format for authority data  including guidelines for content designation 
prepared by Network Development and MARC Standards Office. 
 - Washington [D.C.]  Cataloging Distribution Service, Library of Congress  1987- 
 - 1 v. (loose-leaf) 
<br/><br/> 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. 
<br/><br/>Bibliography: introd., p. 1-2. 
<br/><br/><label>LCCN: </label>87600155 //r88 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MARC System--Format.--United States<br/>Authority files Cataloging--Data processing--Standards--United States.
<br/><br/><label>LC Class. No.: </label>Z699.4.M2  / U747 1987 
<br/><br/><label>Dewey Class. No.: </label>025.3/22 
<br/><br/><label>Gov. Doc. Class. No.: </label>LC 1.6/4:Au8