Library of Congress classification schedules: a cumulation of additions and changes ... :
Class Z, bibliography and library science.

APA Citation

Savage, H., Library of Congress. Subject Cataloging Division., Gale Research Company. (1973). Library of Congress classification schedules: a cumulation of additions and changes ...: Class Z, bibliography and library science. Detroit: Gale Research Co..

MLA Citation

Savage, Helen, 1915-, Library of Congress. Subject Cataloging Division, and Gale Research Company. Library of Congress Classification Schedules: a Cumulation of Additions And Changes ...: Class Z, Bibliography And Library Science. Detroit: Gale Research Co., 1973.