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

 - 4th. 
 - New Delhi  Prentice-Hall  1994 
 - xvii, 435p.  23cm. 
<br/><br/><label>ISBN: </label>8120310802 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INTERFACING AND COMMUNICATION
<br/><br/><label>Dewey Class. No.: </label>004.6  / HEL