Gupta, Premkumar  . <br/><br/>
Operation research /  
by Premkumar Gupta and D.S. Hira. 
 - New Delhi :   S.Chand & Co. Ltd., ,   2004 
 - 1395p ;  
<br/><br/><label>ISBN: </label>81-219-0218-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>B113  / P4;3