Biswas, Nripendra, N  <br/><br/>
Principles if telephony  

 - Radiant books   Bangalore   1998 
 -  35 
<br/><br/><label>ISBN: </label>81-85273-09-X  
<br/><br/><label>Subjects--Topical Terms: </label><br/>TELEPHONY 
<br/><br/><label>Dewey Class. No.: </label>621.3857 BIS