Classification. Class H. Subclasses HM-HX. Social sciences. Sociology / Subject Cataloging Division, Processing Services, Library of Congress. Sociology Library of Congress. Subject Cataloging Division. Classification Books Social sciences. Classification Books Sociology. Classification, Library of Congress. Z696.U5HM-HX 1980 025.4 LIB Kept up to date by the Division's L.C. classification--additions and changes, and by an irregular cumulative publication issued by Gale Research Company, entitled: Library of Congress classification schedules : combined with additions and changes through [year] : class H, social sciences, subclasses HM-HX, sociology (Title varies slightly) Includes index. Washington : Library of Congress : Library of Congress, 1980. 1980. 1980 Text x, 169 p. ; eng