Washington [For sale by the Card Division, Library of Congress] 1928; reissued 1968.
형태사항 :
vii, 16, 447, 47 p. 26 cm.
일반사항 :
Alternate pages of 4th group are blank. First ed. published in 1928 by the Classification Division of the Library of Congress. "Additions and changes to July 1967": p. 1-47 (4th group) 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 schedules--a cumulation of additions and changes, Class P, subclasses P-PA; and Library of Congress classifications schedules combined with additions and changes.