Kalavathy, S. <br/><br/>
Operations research 

 - 4th ed. 
 - New Delhi  Vikas Pub.  2015 
 - xviii p. + 533p. 
<br/><br/><label>ISBN: </label>978935963474 
<br/><br/><label>Dewey Class. No.: </label>658.4034 K124O