Gupta, P K <br/><br/>
Problems in operations research: principles and solutions/ 
P. K. Gupta; D. S Hira 
 - New Delhi:  S Chand & Company  2003 
 - 1078p. 
<br/><br/><label>ISBN: </label>9 788121 909686 
<br/><br/><label>Dewey Class. No.: </label>519.8 GUP