Held, Gilbert <br/><br/>
Understanding data communications  from fundamentals to networking 

 - Chichester  John Wiley  2000 
 - xvi,852p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Communication Networks<br/>Data Communications
<br/><br/><label>Dewey Class. No.: </label>621.3821  / H51U