Gilbert Held <br/><br/>
Understanding data communications 

 - 6th ed 
 - Techmedia, New Delhi  c1999 
 - xvi,619p 
<br/><br/><label>ISBN: </label>81-7635-319-1 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Computer Science
<br/><br/><label>Dewey Class. No.: </label>001.64404 Hel