text Washington : The Library of Congress 1989 7th ed. monographic e

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736 p. Subject Cataloging Division, Processing Services, Library of Congress Kept up to date by the division's L.C. classification--additions and changes, and by two publications irregularly issued by Gale Research Company entitled: Library of Congress classification schedules--a cumulation of additions and changes, Class Q an d Library of Congress classification schedules combined with additions and changes. Classification, Library of Congress Periodicals Classification Books Science Z696U5Q 0844406317 8811 20251012174503.0 0000015131