Biswas, Nripendra N. <br/><br/>
Principles of carrier communication 

 - Bombay  Asia Publishing  1970 
 - viii, 234 p. 
<br/><br/><label>ISBN: </label>0.210.22711.7 
<br/><br/><label>Dewey Class. No.: </label>S/C-S/T D66,4 L0