Das,  Bishnu  Charan, <br/><br/>
Siksha  Prayog  Bijnan 

 - 2nd /   2005. 
 - Delhi:  Kalyani  Publishers,  2005. 
 - 206p. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Education., Educational  Technology. 
<br/><br/><label>Dewey Class. No.: </label>371.33