Gupta, Prem Kumar <br/><br/>
Problems in operations research :   principles and solutions / 
Prem Kumar Gupta, D S Hira 
 - 4th ed. 
 - New Delhi :  S. Chand,  2015. 
 - x, 1293 p. 
<br/><br/><label>ISBN: </label>9788121909686  
<br/><br/><label>Dewey Class. No.: </label>658.4034  / GUP