Needham, C. D. Organizing knowledge in libraries : an introduction to information retrieval / C. D. Needham. - 2nd rev. ed. - London : Deutsch, c 1974. - 448 p. ; 22 cm. Includes index. 338 338 ISBN: 0-233-95836-3 Subjects--Topical Terms: Library operations. Dewey Class. No.: 025 / N289o