https://www.loc.gov/marc/umb/um01to06.html https://www.loc.gov/marc/umb/um01to06.html MARC Library of Congress guide to MARC What is a MARC website MARC records MARC Terms and Their Definitions MARC records https://www.loc.gov/marc/umb/um01to06.html Machine-Readable-Cataloging (or MARC) records MARC MARC Terms and Their Definitions Machine-Readable Cataloguing (MARC) record MARC records “What Is a MARC Record, and Why Is It Important,” Understanding MARC Bibliographic: Parts 1 to 6 http://www.loc.gov/marc/umb/um01to06.html MARC records Guide https://www.loc.gov/marc/umb/um01to06.html collaborative network MARC record What is a MARC Record, and Why is it Important? Machine-Readable-Cataloging (or MARC) records MARC records Machine-Readable-Cataloging (or MARC) records Machine-Readable Cataloguing (MARC) record MARC Machine-Readable-Cataloging (or MARC) records Machine-Readable-Cataloging (or MARC) records https://www.loc.gov/marc/umb/um01to06.html collaborative network Library of Congress guide to MARC Machine-Readable-Cataloging (or MARC) records MARC records