Biswas, Nripendra N. <br/><br/>
Principles of Telegraphy 

 - Bombay  Asia Publishing  1964 
 - x, 185 p.  
<br/><br/> Includes Appendix and Index 
<br/><br/><label>Dewey Class. No.: </label>TBB D66, 47 K4; 18