"Cambridge University Press" <br/><br/>
Cambridge Click Start  Computer Science for Schools - 4 

 - Karachi  ,Paramount Books (Pvt) Ltd.  2015 
 - 130 
<br/><br/><label>ISBN: </label>9781107654044 
<br/><br/><label>Dewey Class. No.: </label>001.642  / T-124