Sampath, K.. <br/><br/>
Introduction to Educational Technology /  

 - Third Rev. Ed. /  
 - New Delhi-16 :   Sterling Publishers Pvt. Ltd. ,   1993 
 - p.348 :  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education Technology
<br/><br/><label>Dewey Class. No.: </label>T:3(F)  / M4;6