Bryce, James  Y <br/><br/>
Using ISDN 

 - 2nd ed.  
 -  New Delhi : PHI,  1996 
 - xxiv+627 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ISDN
<br/><br/><label>Dewey Class. No.: </label>621.385  BRY;1 `R'