TY  - GEN
AU  - Sonnenberg, G J
TI  - Radar and Electronic Navigation
SN  - 0408002727
U1  - 623.893 
PY  - 1978///
CY  - London
PB  - Newnes-Butterworths
KW  - Electronic Navigation
KW  - Navigation
KW  - Radar
ER  -