Das, Phunu , <br/><br/>
Educational Technology  Textual Documents 
Phunu Das & Tarali Pathak 
 - ist ed. 
 - Gauhati  Shanti Prakashan  2017 
 - pg162:  23cm. 
<br/><br/><label>ISBN: </label>978-93-84466-31-2 
<br/><br/><label>Subjects--Index Terms: </label>Education G- Education MS- Education 
<br/><br/><label>Dewey Class. No.: </label>371.1