Educational Technology:    A Practical Textbook for Students, Teachers Professionals and Trainers. 
KUMAR K. L. 
 - Second Revised edition 
 - New Delhi :  New Age International ( P ) Limited, Publishers;  2008. 
 - xix, 345p. ;  ill. ,   25cm 
<br/><br/><label>ISBN: </label>9788122421583 
<br/><br/><label>LC Class. No.: </label>LB1028  / .K85  2008