"Stallings, William" <br/><br/>
ISDN And Broadband ISDN 

 - Fourth 
 - New Delhi  PHI  2004 
 - "XVI, 542" 
<br/><br/><label>ISBN: </label>9.79E+12 
<br/><br/><label>Dewey Class. No.: </label>621  / 3981 S