Priyanjan Karthik  <br/><br/>
Audio Visual Aids & education  

 - new delhi   dominant pulisher and distirbutors   2014 
 - xiii, 292 
<br/><br/><label>ISBN: </label>978-93-82007-67-8 
<br/><br/><label>Dewey Class. No.: </label>630.715 /K1494A