TY  - BOOK
AU  - Biswas N.N
TI  - Principles of Telegraphy
SN  - 0000023441
U1  - 62.382 
PY  - 1984///
CY  - Delhi
PB  - Media Promoters and Pub.(pvt)., Ltd.,Bombay
KW  -  Telegraphy
KW  - Principles
KW  - Telegraphy(621.382)
ER  -