GUPTA (Prem Kumar);HIRA (D S). <br/><br/>
Operations research. 

 - 4 
 - New Delhi  S Chand & Company Ltd  2007 
 - xii,1377  PB 
<br/><br/><label>ISBN: </label>8121902819 
<br/><br/><label>Dewey Class. No.: </label>658.4034   / GUPP