Singh, Y.K ... [et. al.] <br/><br/>
Educational technology: teaching - learning 

 - New Delhi  A P H Publishing Corporation  2008 
 - vi,332p.  23cm.  HB 
<br/><br/><label>ISBN: </label>9788131303610 
<br/><br/><label>Dewey Class. No.: </label>371.33  / SIN