Tiwari, ramkumar <br/><br/>
Janshankhya bhugol 

 - 2nd 
 - Allahabad    Pravalika pub.  2017 
 - 341 
<br/><br/><label>ISBN: </label>9789384292058 
<br/><br/><label>Dewey Class. No.: </label>304.6  / ram j