TY  - BOOK
ED  - Great Britain. Department of Transport. 
TI  - International code of signals, 1969 / 
SN  - 0115506527
U1  - 629.042 23
PY  - 1969///.
CY  - London : 
PB  - H.M. Stationery Office, 
KW  - Signals and signaling.
KW  - Merchant marine -- Signaling.
KW  - Distress signals.
ER  -