Ravindran A <br/><br/>
Operations research : principles and practice 

 - 2nd ed. 
 - New York  John Wiley  1986 
 - xviii, 637p, 22cm 
<br/><br/><label>ISBN: </label>047185980X 
<br/><br/><label>Dewey Class. No.: </label>658.4034,  / D, rav