Held, Gilbert <br/><br/>
Understanding Data Communications  

 - 3rd 
 -  Sams,   c1991 
 - IX, 368 p.  : ill 
<br/><br/>Includes Bibliographical References and Index 
<br/><br/><label>ISBN: </label>0672300052 
<br/><br/><label>ISSN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data Transmission Systems<br/>Digital Communication
<br/><br/><label>Dewey Class. No.: </label>004.6  / HEL