The nature of educational technology/ 
by V.K Rao (ed.). 
 - New Delhi:  Commonwealth,  1992. 
 - 340p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education techniques <br/>Education 
<br/><br/><label>Dewey Class. No.: </label>371.307 8   / VKR/N