Shashi Shyam Singh <br/><br/>
Samajik Vigyan Hindi Vishwakosh Vol.1 

 - New Delhi  Kithabgar Prakashan  2012 
 - 311 
<br/><br/><label>ISBN: </label>8170161630 
<br/><br/><label>Dewey Class. No.: </label>300.3 SHA