Roy Chowdhury,Sunanda <br/><br/>
Concise Textbook on Communication and Educational Technology 

 - Delhi  Kumar Pub.  2018 
 - 120 p. 
<br/><br/><label>ISBN: </label>9788193705506  Rs. 150/- 
<br/><br/><label>Dewey Class. No.: </label>362  / ROY