Lal, Harmesh <br/><br/>
Audo-visual aids to educational technology / 
Harmesh Lal, Shailendra Bhushan, Meenu Kumar 
 - New Delhi :  Ocean Books Pvt.Ltd.,  2018 
 - 244 p. :  ill. ;  22 cm. 
<br/><br/> Bibliography p. 237-244 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9788184305432  Rs.500.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual education
<br/><br/><label>Dewey Class. No.: </label>371.33