"The additions and changes in Class Q, adopted while this work was in press will be cumulated and printed in List 234 of LC classification-- additions and changes"--Verso t.p. "Incorporate changes ...

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.