Library of congress subject headings / Prepared by the office for subject cataloging policy collections services - 13th ed. - Washington: Library of Congress, 1990 - lxvii, 1465p. Vol. 1 A-E ISSN: 1048-9711 Subjects--Topical Terms: LCSH Subjects--Index Terms: Symbols Universal Decimal Class. No.: D 025.43LCSH / N0.1