The use of the Library of Congress classification : proceedings / Edited by Richard H. Schimmelpfeng and C. Donald Cook. Institute on the Use of the Library of Congress Classification, New York, 1966. Schimmelpfeng, Richard H. Cook, C. Donald American Library Association. Cataloging and Classification Section. Classification, Library of Congress Congresses. Z696.U4 I55 1966 025.4 AMU Includes bibliographical references. Chicago : American Library Association, 1968. 1968. 1968 Text xii, 245 p. : eng