Das, B. C.,  1996, <br/><br/>
Educational technology 
by B. C. Das 
 - 1st. 
 - New Delhi:  Kalyani Publishers. 
 - 162p:  23cm. 
<br/><br/><label>Subjects--Index Terms: </label>Education Educational technology 
<br/><br/><label>Dewey Class. No.: </label>371.33