Singh, Y. K. <br/><br/>
Educational technology : teaching -learning  / 
Singh, Y. K. 
 - New Delhi:  A P H Publishing,  2014. 
 - vi, 332p.; 22cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9788131303610 
<br/><br/><label>Dewey Class. No.: </label>371.33 SIN