Hardwick, Steve <br/><br/>
ISDN design: a practical approach 

 - New York  Academic Press  1989 
 - x,152p. : ill.  
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>123249716 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Integrated services digital networks<br/>ISDN