Purchasing Principles& Techniques/  English. 
Peter Baily, David Farmer. 
 - 3rd Ed. 
 - London:  Pitman Publishing Limited  1977 
 - v,353p.:  ill.;  23cm. 
<br/><br/><label>ISBN: </label>027301028 
<br/><br/><label>Dewey Class. No.: </label>658.8.10  / BAI