TY  - BOOK
TI  - Admiralty list of radio signals: : radio aids to navigation, differential GPS (DGPS), legal time, radio time signals and electronic position fixing system 
SN  - 9780707719566
U1  - 623.8932 
PY  - 2011///
CY  - United Kingdom : 
PB  - The United Kingdom Hydrographic Office, 
KW  - Radio Signals
KW  - Marine Navigation
N1  - Includes Index.
ER  -