Library of congress subject headings / Prepared by the office for subject cataloging policy collections services - 13th ed. - Washington: Library of Congress, 1990 - 3083p. Vol. 2 F-O ISSN: 1048-9711 Subjects--Topical Terms: LCSH Subjects--Index Terms: Symbols Universal Decimal Class. No.: D 025.43LCSH / N0.2