Gupta P K <br/><br/>
Operation Research 

 - 7th Edn 
 - S.Chand  New Delhi  2018 
 - xii,1498p 
<br/><br/><label>ISBN: </label> Rs. 675.00 
<br/><br/><label>Dewey Class. No.: </label>658.003 dc-22