TY  - BOOK
AU  - Biswas N.N.
TI  - Principle of Telegraphy
SN  - 0000017419
U1  - 62.382 
PY  - 1964///
CY  - Bombay
PB  - M P P Bombay
KW  - Principle  Telegraphy
KW  - Telegraphy(621.382)
ER  -