Kept up to date by the Division's L.C. classification--additions and changes, and by 2 publications irregularly issued by Gale Research Company entitled: Library of Congress classification ...

Notes "Originally planned to fit into the Library of Congress classification by replacing LC's classes P, PA-PM." Reprinted from Studies in linguistics, vol. 3, 1945; 4, 1946; 6, 1948; 9, 1951.