Held, Gilbert.  x <br/><br/>
Understanding data communications  x 

 - 4 
 - New Delhi  Prentice-Hall of India  1996 
 - xviii, 435 
<br/><br/>Includes 
<br/><br/><label>ISBN: </label>8120310802 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication Communication 
<br/><br/><label>Dewey Class. No.: </label>001.5544/H474u