Subject headings used in the dictionary catalogs of the library of congress /Library of congress, January-December 1969 supplement to the 7th edition - 7th ed. - Washington, D.C.: Library of congress, 1970 - 248p. Subjects--Topical Terms: Subject headings Subjects--Index Terms: Dictionary catalogs Subject cataloging division Universal Decimal Class. No.: D 025.343LC / J7;K6-5