Revised, updated, and almost completely rewritten, this sixth edition of a classic textbook teaches all aspects of cataloging and classification, stressing practical library applications as well as theory. Incorporated are changes from the 1988 revision of the Anglo-American Cataloguing Rules, 2d ed. (AACR2) and the 20th edition of the Dewey Decimal classification system. Expanded information on automation, nonprint media, and Library of Congress classification is provided. Appendices explain how computers process bibliographic information.