Software. <br/><br/>
O  level module 1  information  technoligy 

 - Delhi :  Khanna Publisher,  2007 
 - 427. 
<br/><br/><label>ISBN: </label>8187522429 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Systems
<br/><br/><label>Dewey Class. No.: </label>003.54  / SOF