Data preparation manual for the conversion of map cataloging records to machine-readable form /
Carrington, David K.,1938-
Mangan, Elizabeth U.joint author.
Library of Congress.Geography and Map Division.
Washington, Library of Congress; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]
1971.
Library of Congress
MARC formats
Cataloging of maps
Retrospective conversion (Cataloging)