TY  - BOOK
AU  - Sen, A. K.
AU  - Bhattacharya, A. B.
TI  - Radar Systems and Radio Aids to Navigation 
U1  - 621.38415 
PY  - 1988///
CY  - Delhi : 
PB  - Khanna Publishers, 
KW  - Aids to Navigation
KW  - Radar System
N1  - NN
ER  -