MARC 21 format for holdings data  including guidelines for content designation 
 MARC 21 holdings format 
prepared by Network Development and MARC Standards Office, Library of Congress in cooperation with Standards and Support, Library and Archives Canada, Bibliographic Standards and Systems, British Library. 
 - 2000 ed. 
 - Washington  Ottawa  Library of Congress, Cataloging Distribution Service  Library and Archives Canada  c2000- 
 - v. (loose-leaf)  28 cm. 
 - 
<br/><br/> Second publisher varies: National Library of Canada, 2000-<2001>  Description based on: update no. 5 (Oct. 2004). 
<br/><br/>Includes bibliographical references . 
<br/><br/>Prepared in cooperation with Standards and Support, National Library of Canada, 2000-<update no. 2 (Oct. 2001)> 
<br/><br/>Merger of: USMARC format for holdings data, and: Canadian MARC communication format. Holdings data. 
<br/><br/><label>ISBN: </label>0844409995 9780844409993 0660180944 9780660180946 0660179903 9780660179902 0844410004 (U.S.) 9780844410005 (U.S.) 
<br/><br/><label>LCCN: </label>2007231708 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Holdings Bibliographic data--Data processing.<br/>MARC formats
<br/><br/><label>LC Class. No.: </label>Z693.3.H65  / M65 2000 
<br/><br/><label>GPO Item No.: </label>0815 0815 (online) 0815-G-02 
<br/><br/><label>Gov. Doc. Class. No.: </label>LC 30.2:H 71/2000 LC 30.25/3: