Das, P.N. <br/><br/>
Carrier current engineering including long distance telephony:  for the under-graduate students of telecommunication and electrical engineering/ 
P.N. Das 
 - 2nd ed. 
 - Calcutta:  Modern Book,  1968 
 - 191 p.;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> Rs. 12.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Long distance telephone service<br/>Telecommunication lines<br/>Crosstalk<br/>Telegraph<br/>Telephone, carrier current
<br/><br/><label>Dewey Class. No.: </label>621.385