Swarup, Kanti ; Gupta, P. K. ; Mohan, Man <br/><br/>
Operations Research 
/ by Kanti Swarup, P. K. Gupta and Man Mohan 
 - 6th ed. 
 - New Delhi:   Sultan Chand & Sons,   1991. 
 - 928p. 
<br/><br/><label>Dewey Class. No.: </label>519.5  / SWA/O