Chopra, J.K. <br/><br/>
General science and technology 
edited by J.K. Chopra 
 - 1st ed. 
 - New Delhi:  Unique Publisher (I) Pvt. Ltd.  2019 
 - 315p. 
 - Unique Quintessence of General Studies 2019  paper-1 .
<br/><br/> For UPSC civil services preliminary examination 
<br/><br/><label>ISBN: </label>9789388624237 
<br/><br/><label>Dewey Class. No.: </label>A0aF  / Q9.1