Biswas, Nripendra Nath,  1928- <br/><br/>
Principles of carrier communication / 
[by] N.N. Biswas. 
 - London :  Asia Publishing House,  1970 [Reprinted1975] 
 - viii, 232 p. :  illus. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0210227117 :  £2.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone, Carrier current.
<br/><br/><label>Dewey Class. No.: </label>621.385  / BIP 1975