Buffa, Elwood S. <br/><br/>
Essentials of management science : operations  research 
<label>/ by </label> Buffa, Elwood S. 
<label>;</label> Dyer, James S. 
 - New York  John Wilely & Sons  1978 
 - xiii, 528p.  ill.  24 cm. 
<br/><br/><label>Dewey Class. No.: </label>658.54  / BUF