O'Leary, Timothy J. <br/><br/>
Computing Essentials/ 

 - New York  McGraw-Hill  1997 
 - xi,various pagings:  ill.; 
<br/><br/><label>ISBN: </label>0079130623 
<br/><br/><label>LC Class. No.: </label>QA76.27  / .Ol21 1997