Shelly, Gary B. <br/><br/>
Essential introduction to computers :  and how to purchase a personal computer / 
Gary B. Shelly, Thomas J. Cashman, Misty E. Vermaat 
 - 7th ed. 
 - Cambridge, Mass  :  Course Technology ,  2009 
 - 40 p. :  col. ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>1423912357 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers