Derfler, Frank J., <br/><br/>
How networks work /  
Frank J. Derfler, Les Freed ; Illustrated by :  Michael Troller. 
 - Seventh Edition. 
 - vi, 233 pages :   colored illustrations ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0789732327 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Communication history.<br/>Networking.<br/>Business.<br/>Internet.
<br/><br/><label>Dewey Class. No.: </label>004.6  / D431