O'Leary Timothy J. <br/><br/>
Computing essentials 

 - New York:  McGraw-Hill,  1996. 
 - (various paging) :  ill. ; 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0070490910 
<br/><br/><label>LC Class. No.: </label>QA76  / .Ol2 1996