Gupta, Himanshu <br/><br/>
Operations research 

 - 6th ed. 
 - Ludhiana  Kalyani Pub  2011 
 - 363p. p. 
<br/><br/><label>ISBN: </label>9788127269463 
<br/><br/><label>Dewey Class. No.: </label>001.43 G969O