Classification. Class P, subclasses P-PM supplement: Index to languages and dialects. - U. S. Library of Congress Subject Cataloging Division; United States Library of Congress Classification Division (Washington U. S. Government Printing Office, 1957)
First ed. published in 1936, by the Classification Division of the Library of Congress, under title : Classification. Philology. Index to languages and dialects in the volumes P-PA, PB-PH, PJ-PM.
Keywords: Languages and languages -- Indexes