Viswanathan, Thiagarajan. <br/><br/>
Telecommunication Switching Systems and Networks  

 - New Delhi.  Prentice Hall of India.  1995 
 - 24X16 
<br/><br/><label>ISBN: </label>8120307135 
<br/><br/><label>Dewey Class. No.: </label>621.382 V822