TY  - BOOK
AU  - Biswas,N.N.
TI  - Principles of telegraphy
U1  - 621.382 
PY  - 1964///
CY  - New York
PB  - Asia Pub
KW  - Telegraph
KW  - Telecommuniction
KW  - Equipment and supplies
KW  - Telegraph wire
N1  - Includes index
ER  -