Fitzgerald Jerry <br/><br/>
Business Data Conmmunications And Networking 

 - 7th Ed. 
 -  "John Wiley And Sons, New York"  2002 
 - 457 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>047139100X 
<br/><br/><label>Dewey Class. No.: </label>4.6  / FIT/DEN