Halsall, Fred,  <br/><br/>
Data communications, computer networks, and open systems 

 - 4th. ed. 
 - xvi,  907 pages :   illustrations ;   25 cm 
<br/><br/><label>ISBN: </label>020142293X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems ; Computer networks
<br/><br/><label>Dewey Class. No.: </label>004.6