Aggarwal, J. C. <br/><br/>
Essentials of educational technology :  Innovations In Teaching- Learning / 
J. C Aggarwal 
 - 3th ed. 
 - New Delhi :  Vikas Publishing House,   2014 
 - 517 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>9789325976153 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education, Primary.<br/>Educational technology--United States.<br/>Instructional systems--Design.