TY  - BOOK
AU  - Biswas, Nripendra N.
TI  - Principles of Telegraphy
SN  - 0-210-98177-6
U1  - TBB D66, 47  
PY  - 1964///
CY  - Bombay
PB  - Asia Publishing
N1  - Includes Appendix and Index
ER  -