Gupta, P K <br/><br/>
Operations research 
P KGupta 
 - 7th ed. 
 - New Delhi  S. Chand  2018 
 - xii; 1498p 
<br/><br/><label>ISBN: </label>978812190281 
<br/><br/><label>Dewey Class. No.: </label>1.424  / GU-O