Muddasir Hamid Malik, Aqueel Ahmad Pandith <br/><br/>
Instructional Technology/ 

 - New Delhi  APH publishing corporation  2013 
 - 125 p.  22 cm. 
<br/><br/><label>ISBN: </label>9.7893313196e+012 
<br/><br/><label>Universal Decimal Class. No.: </label>371.33