TY  - GEN
AU  - Olsen, Oddmund.
TI  -  Electronic navigation systems
SN  - 8291839050
AV  - VK560 
PY  - 1999///
CY  - Norway
PB  - Poseidon
KW  - Electronics in navigation
N1  - Rev. ed. of: Electronic aids to navigation. 1999
ER  -