Sharma,Suresh K. <br/><br/>
Communication and Educational Technlogy 

 - 2nd Ed. 
 - New Delhi  Elsevier  2018 
 - 456 p. 
<br/><br/>text 
<br/><br/><label>ISBN: </label>9788131246542  Rs. 520/- 
<br/><br/><label>Dewey Class. No.: </label>362  / SHA