Introduction to educational technology / 
C.P. Singh 
 - Nairobi :  Lotus press,  2009. 
 - 312 pages: 
<br/><br/><label>ISBN: </label>8183820247 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology 
<br/><br/><label>LC Class. No.: </label>1028.3  / .s27 1981