Biswas, Nripendra Nath,  1928- <br/><br/>
Principles of carrier communication 
[by] N.N. Biswas. 
 - Bombay   Media Promoters & Publishers  1969. 
 - viii, 232 p.  illus.  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0210227117 : 
<br/><br/><label>LCCN: </label>72176855  
<br/><br/><label>Nat. Bib. No.: </label>B71-25817 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone, Carrier current.
<br/><br/><label>LC Class. No.: </label>TK6421  / .B53 1969 
<br/><br/><label>Dewey Class. No.: </label>621.387/82