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 PL-PM and Library of Congress classification schedules combined with additions and changes.
Class P, subclasses PL-PM, languages of Eastern Asia, Africa, Oceania, hyperborean, Indian and artificial languages / Rita Runchock and Kathleen Droste, editors ; Victoria A. Coughlin and Jennifer J. Dye, associate editors. c1993