Jennings, Fred  . <br/><br/>
Practical data communications : modems, networks, and protocols /   Textual Documents 
Fred Jennings. 
 - Oxford :   Blackwell Scientific publications ,   1986. 
 - NULL ;   NULL. 
<br/><br/><label>Subjects--Index Terms: </label>Data communication 
<br/><br/><label>Dewey Class. No.: </label>004.6  / JEN