In Process Materials, a MARC FormatLibrary of Congress (Washington, D.C.). Marc Development Office1975
Motion pictures / Copyright Office, the Library of Congress.Library of Congress. Copyright Office.1949
MARC Code List for Geographic Areasprepared by Network Development and Marc Standards Office, Library of Congress2000
MARC Code List for Languagesprepared by Network Development and Marc Standards Office, Library of Congress2007
MARC 21 Format for Authority DataLibrary of Congress. Network Development and Marc Standards Office., Library and Archives Canada. Standards and Support. & 4 more1999
MARC 21 Format for Community InformationLibrary of Congress. Network Development and Marc Standards Office., Library and Archives Canada. Standards and Support. & 3 more2000EN
Project MARC; an Experiment in Automating Library of Congress Catalog Data.Library of Congress. Information Systems Office1.1967EN