"This cumulation consists of the revisions published in LC Classification-additions and changes, list 233 (Jan.-Mar.,1989) through list 248 (Oct.-Dec.,1992)" - t.p. verso.
Revisions to: Classification: class P, subclasses PJ-PK, Oriental philology and literature, Indo-Iranian philology and literature. Washington: Library of Congress, 1988.
Library of Congress classification schedules : a cumulation of additions and changes through 1992. Class P, subclasses PJ-PK, Oriental philology and literature, Indo-Iranian philology and literature. ISBN 0810382504. Published by Gale Research in 1993. Publication and catalogue information, links to buy online and reader comments.