Gupta Kumar Prem.Er <br/><br/>
Problems in Operations Research  

 - 1 
 - New Delhi  S.Chand  2020 
 - 1293 
<br/><br/><label>ISBN: </label>978-81-219-0968-6 
<br/><br/><label>Dewey Class. No.: </label>658.403 4R20 GUP