"Gupta, O.P." <br/><br/>
Objective Type Questions 

 - Thirteenth 
 - Delhi  Khanna Pub.  2015 
 - "1,- 1235" 
<br/><br/><label>ISBN: </label>9.79E+12 
<br/><br/><label>Dewey Class. No.: </label>660  / GUP