Outline of the Library of Congress classification. Revised and enlarged edition of "Outline scheme of classes.". - U.S. Library of Congress. Subject Cataloging Division; U.S. Library of Congress. Classification Division. Classification. Outline scheme of classes (Washington [U.S. Govt. Printing Office], 1942)
Earlier editions were issued by the Classification Division of the Library of Congress under title : Classification. Outline scheme of classes.
Keywords: Classification -- Books