Fred Halsall <br/><br/>
Data Communications,Computer Networks And OSI 

 - 
 -  Addison-Wesley Publishing  1988 
 - 549 
<br/><br/>  
<br/><br/><label>ISBN: </label>0-201-18244-0 
<br/><br/><label>Dewey Class. No.: </label>621.39