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

 - 9th ed. 
 - Ludhiana  Kalyani Pub  2014 
 - 364p. p. 
<br/><br/><label>ISBN: </label>9789327235876 
<br/><br/><label>Dewey Class. No.: </label>001.43 G969O