Content Development Team <br/><br/>
DSSSB (Delhi adhinasth sewa chayan board) TGT bharti pariksha samajik vigyan 

 - Delhi  Excellent Books 
 - V.P.16p. 
<br/><br/> 58515 
<br/><br/><label>ISBN: </label>9789381978729  300 
<br/><br/><label>Dewey Class. No.: </label>001 DEV C