Pathak, P D <br/><br/>
Safal shikshan kala (Hindi) 

 - 17th 
 - Agra  Agrawal Publications  2010 
 - 456 
<br/><br/><label>ISBN: </label>81-89994-61-7 
<br/><br/><label>Dewey Class. No.: </label>371.102 PP