Tiwari, R. K. and Varshney, Rajiv. <br/><br/>
Theory of line communication / 

 -  Dhanpat rai & co. Ltd.,  c2004. 
 - 0  ill. ; 
<br/><br/><label>ISBN: </label>NA 
<br/><br/><label>Dewey Class. No.: </label>621.38215