Norton Peter <br/><br/>
Essential concepts/ 
Peter Nortons.  
 - 5th ed. 
 - New York :  Mc Graw Hill,   2003. 
 - xvi, 276 p. :  ill. ; 
<br/><br/> includes index  
<br/><br/><label>ISBN: </label>97878454506 
<br/><br/><label>Subjects--Topical Terms: </label><br/>computers basics. 
<br/><br/><label>LC Class. No.: </label>Z 663.23.A2 2003