Goldstein, Fred R. <br/><br/>
Isdn in perspective  

 - Addison-Wesley 
<br/><br/><label>ISBN: </label>0201500167 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Integrated services digital networks
<br/><br/><label>Dewey Class. No.: </label>621.382 GOL