Vanaja, M. <br/><br/>
Educational technology 

 - Hyderabad  Neelkamal Publications Pvt. Ltd.   2004 
 - xix,300p. 
<br/><br/><label>ISBN: </label> RS 150.00 
<br/><br/><label>Source: </label> RS 150.00 
<br/><br/><label>Dewey Class. No.: </label>371.33 VAN