Classification. Class P. Subclasses P-PM. Supplement. Index to languages and dialects - Library of Congress. Subject Cataloging Division (Washington : The Library : For sale by the Cataloging Distribution Service, Library of Congress, 1983)
Kept up to date by the division's L.C. classification--additions and changes, and by two publications irregularly issued by Gale Research Company entitled: Library of Congress classification schedules--a cumulation of additions and changes, Class P, Subclasses P-PM, Supplement and Library of Congress classification schedules combined with additions and changes.
Keywords: Classification -- Books -- Language and languages -- Indexes; Classification, Library of Congress -- Indexes