Fred Halsall <br/><br/>
Data Communication , Computer Networks and Open Systems 

 - 
 -  Addison-Wesley Publishing  1996 
 - 907 
<br/><br/>  
<br/><br/><label>ISBN: </label>0-201-42293-X 
<br/><br/><label>Dewey Class. No.: </label>621.39