Singh,Nishant <br/><br/>
Patrakarita ki vibhin vidhyaein 

 - New Delhi  Radha krisha publications  2006 
 - 193p. 
<br/><br/><label>ISBN: </label>81-7487-250-7 
<br/><br/><label>Dewey Class. No.: </label>H070   Sin.P6