Biswas, Nripendra, N  <br/><br/>
Principles of telegraphy  

 - Media promoters   Bombay   1998 
 -  75 
<br/><br/><label>ISBN: </label>81-85099-04-9  
<br/><br/><label>Subjects--Topical Terms: </label><br/>TELEPHONY 
<br/><br/><label>Dewey Class. No.: </label>621.385 7 BIS