Dhingra,Ishwar C. <br/><br/>
New approach to general science: exclusively recommended for UPSC prelims general studies paper 1 and mains general studies paper III (CSE)/by Ishwar C. Dhingra 

 - New delhi  Heed publications (P) ltd  2016 
 - 281p. 
<br/><br/><label>ISBN: </label>9789385867422 
<br/><br/><label>Dewey Class. No.: </label>001.5  D537N