Zenz, Gary Joseph. Purchasing and the management of materials / Gary J. Zenz ; edited by George Thompson. - 6th ed. - New York : Wiley, c1987. - xvi, 542 p. : ill. ; 24 cm. Includes bibliographical references and index. ISBN: 047181802X LCCN: 86032589 Subjects--Topical Terms: Industrial procurement--Management.Materials management. LC Class. No.: HF5437 / .Z4 1987 Dewey Class. No.: 658.7/2