Ray, P K S. <br/><br/>
Educational Technology , :  Technology of Instructional Design / 
By P K S Ray. 
 - 1st Ed. 
 - New Delhi :  Dominant Publishers & Distributors Pvt Ltd,  2012. 
 - 462p. ;  00 cm. 
<br/><br/><label>ISBN: </label>9789380642222 
<br/><br/><label>Dewey Class. No.: </label>371.33  / RAY