TY  - BOOK
AU  - Biswas,Nripendra Nath
TI  - Principles of carrier communication
SN  - 0210227117 :
AV  - TK6421 .B53 1969
U1  - 621.387/82 
PY  - 1969///
CY  - Bombay 
PB  - Media Promoters & Publishers
KW  - Telephone, Carrier current
N1  - Includes index; Includes bibliographical references
ER  -