Ravat, Chandrabhan and Khandelval, Ramkumar <br/><br/>
Sodh : pravidhi aur prakriya 

 - Mathura  Jawahar Pustakalaya  1979 
 - 199 
<br/><br/><br/>Hindi 
<br/><br/><label>Dewey Class. No.: </label>H007  / Rav/Kha