IT essentials. 
 PC hardware and software course booklet 
Cisco Networking Academy. 
 - 2nd ed. 
 - Indianapolis, IN :  Cisco Press,  2010. 
 - xvii, 361 p. ;  27 cm. 
<br/><br/><label>ISBN: </label>9781587132612 (pbk.) 
<br/><br/><label>LCCN: </label>2010014612 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers.<br/>Microcomputers--Equipment and supplies.
<br/><br/><label>Dewey Class. No.: </label>004