Classification. Class M. Music and books on music / Subject Cataloging Division, Processing Department, Library of Congress. Music and books on music. Library of Congress. Subject Cataloging Division. Gale Research Company. Classification Music. Classification Books Music. Classification, Library of Congress. Z696.U5M 1978 025.4 LIC "A revision of the second edition, originally published in 1917, and includes additions and changes made by the Library of Congress through June 1977." Includes index. 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 M; and Library of Congress classification schedules combined with additions and changes. Washington : The Library : for sale by Cataloging Distribution Services, Library of Congress, 1978. 1978. 1978 Text x, 228 p. ; eng