Reeve, Whitham D. <br/><br/>
Subscriber Loop Signaling and Transmission Handbook 

 - Bombay :  Jaico Publishing House, 
 - xii, 289 p.:  [E24] 
<br/><br/><label>ISBN: </label>8172244398 
<br/><br/><label>Dewey Class. No.: </label>621.385  / REE/SUB