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

 - 4 
 - Prentice - Hall of India, Pvt. ltd., New Delhi  1996 
 - 431 
 - .
<br/><br/>  
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet; Computer networks
<br/><br/><label>Dewey Class. No.: </label>004.678  HEL-U4