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

 - USA  Wokingham, England ; Addison-Wesley Pub. Co., c1996.  1996 
 - 907 
<br/><br/><label>ISBN: </label>9780201422931 
<br/><br/><label>Dewey Class. No.: </label>001.642  / 625