Preppernau, Joan <br/><br/>
Microsoft Windows 7 : step by step 

 -  New Delhi  PHI Learning  2010 
 - xlix, 492p.   
<br/><br/> CDBK 3742; Includes index 
<br/><br/><label>ISBN: </label>9788120341166 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating system<br/>Operating system  Windows