PREM KR GUPTA <br/><br/>
OPERATION RESERCH 

 - 7th 
 - NEW DELHI  S.CHAND  2015 
 - 1498 
<br/><br/><label>ISBN: </label>9788121902816 
<br/><br/><label>Dewey Class. No.: </label>511.8  / GUP-O