The future of subdivisions in the Library of Congress subject headings system : report from the Subject Subdivisions Conference /
Subject Subdivisions Conference(1991 :Airlie, Va.)
Conway, Martha O'Hara,1963-
Washington, D.C. : Published by the Library of Congress, Cataloging Distribution Service,
1992.
Includes bibliographical references.
Subject heading subdivisions
Subject headings, Library of Congress
Subject cataloging