Held, Gilbert <br/><br/>
Data communications networking devices :  operation, utilization, and LAN and WAN internetworking / 
Gilbert Held 
 - 4th ed. 
 - Chichester:  Wiley,   Ac1999 
 - xxiv, 855 pages:  ill;  25 cm 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9780471975151 (hbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems
<br/><br/><label>Dewey Class. No.: </label>004.6  / HEL