Bhatt, B D & Sharma, S R <br/><br/>
Educational technology  Concept and technique 

 - Kanishka publishing house, New Delhi  1992 
 - viii,384p 
<br/><br/><label>ISBN: </label>81-85475-52-0 
<br/><br/><label>Dewey Class. No.: </label>371.3 Bha/Sha