TY  - BOOK
ED  - Great Britain. Hydrographic Office.
TI  - Admiralty List of Radio Signals, Volume 2 : : radio aids to navigation, differential GPS (DGPS), legal time, radio time signals and electronic position fixing system 
SN  - 9780707747088
U1  - 623.89  23
PY  - 2021///
CY  - Taunton
PB  - United Kingdom Hydrographic Office
KW  - Radio Signals
KW  - Radar Beacons
KW  - AIS
ER  -