Computer concepts/ 
Dan Oja  
 - 11th ed. 
 - Ontario:  Nelson Education Publishers,  2009. 
 - 64p.; 
<br/><br/><label>ISBN: </label>9781423925170 
<br/><br/><label>Subjects--Topical Terms: </label><br/>computer concept
<br/><br/><label>LC Class. No.: </label>QA76.P356 2009