Ruhela Satyapal <br/><br/>
Sarvekshan anusanhan aur sankhayaki. 
Ruhela Satyapal 
 - Ed 2 
 - Delhi  Vikas publishing           1974 
 - 407p  cm. 
 - Hindi .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Yb4, L4