Bellamy, John <br/><br/>
Digital telephony  

 - New York:   John Wiley & Sons   1982 
 - 526p. 
<br/><br/><label>ISBN: </label>0-471-08089-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.327.8:621.395  / M2