Derfler, Jr., Frank J. <br/><br/>
How networks work / 
Frank J. Derfler, Jr. and Les Freed 
 - 6 
 - Indianapolis :  Que Corporation,  2003       
 - 233 p. 
<br/><br/><label>ISBN: </label>0789727536 
<br/><br/><label>LC Class. No.: </label>TK 5105.5 D431h 2003