Maheshwari S. N. and Mittal S. N. <br/><br/>
Lagat lekhankan ke mool tatva 

 - Delhi  Mahavir Book Depot (Publishers)  2011 
 - 602p. 
<br/><br/><label>ISBN: </label>978-81-906937-6-9 
<br/><br/><label>Dewey Class. No.: </label>