Eductional technology 
N. Venkataiah 
 - New Delhi  APH Publishing  1996 
 - xx, 234p.; 22cm. 
<br/><br/><label>ISBN: </label>8170247233. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology
<br/><br/><label>Dewey Class. No.: </label>371.3028  /  EDU