Wilkes, F.M. <br/><br/>
Elements of operational research 

 - LoNew Delhion  McGraw-Hill  1980 
 - xv,343p.  21 cm. 
<br/><br/><label>ISBN: </label>0070845409 
<br/><br/><label>Dewey Class. No.: </label>658.4034,  / D, Wil