IT essentials: : PC hardware and software companion guide. 

 -  Pearson Education South Asia Pte Ltd,  2011 
 - xi 739 pages 
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<br/><br/><label>ISBN: </label>978-9-81069644-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers.
<br/><br/><label>Dewey Class. No.: </label>004 E786 2011