Educational technology / 
ed. by N Venkataiah 
 - New Delhi :   APH Pub.,   1996 
 - xx, 234 p. :   ill. ;   23 cm. 
<br/><br/><label>ISBN: </label>	8170247233 
<br/><br/><label>Subjects--Topical Terms: </label><br/>   Educational technology.;Telecommunication
<br/><br/><label>Universal Decimal Class. No.: </label>371.3078