Zenz, Gary Joseph. <br/><br/>
Purchasing and the management of materials / 
Gary J. Zenz. 
 - 5th ed. 
 - New York :  Wiley,  c1981. 
 - xiii, 514 p. :  ill. ;  24 cm. 
<br/><br/> Fourth ed., by J. H. Westing, I. V. Fine, and G. J. Zenz, published under title: Purchasing management. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0471060917 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial procurement--Management.<br/>Materials management.
<br/><br/><label>Dewey Class. No.: </label>658.72  / ZEP 1981