Revisions to: Classification, Class A, General works. 4th ed. Washington: Library of Congress, 1973.
Includes index.
" This cumulation consists of the revisions published in LC Classification - Additions and Changes, list 171 (July-Sept ., 1973) through list 248 (Oct-Dec., 1992)" -t.p. verso.
Class A, General works : Library of Congress classification schedules : a cumulation of additions and changes through 1992. ISBN 0810382504. Published by Gale International in 1993. Publication and catalogue information, links to buy online and reader comments.