Kothari, C. R <br/><br/>
An Introduction to operatinal research 

 - 3rd rev ed 
 - Vikas Publ, New Delhi  1992 
 - xv, 522 
<br/><br/><label>ISBN: </label>978-076985-672 
<br/><br/><label>Dewey Class. No.: </label>001.424 Kot