Yadav, R. S. <br/><br/>
An advanced educational technology 

 - Allahabad  Horizon publishers  1997 
 - 398p. 
<br/><br/><label>ISBN: </label>8172510152  620 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Dewey Class. No.: </label>370  / YAD