Hardwick, Steve. <br/><br/>
ISDN design :  a practical approach /  [Book]. 
Steve Hardwick.  
 - San Diego :   Academic Press,   1989. 
 - x, 152 p. :   ill. ;   27 cm. 
 - Professional and technical series .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0123249708 
<br/><br/><label>LCCN: </label>89031226 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Integrated services digital networks.