TY  - BOOK
TI  - Admiralty list of radio signals : : global maritime distress and safety system GMDSS.  
SN  - 9780707719597
U1  - 623.8932 
PY  - 2011///
CY  - United Kingdom : 
PB  - The United Kingdom Hydrographic Office , 
KW  - Radio Signals
KW  - Marine Navigation
N1  - Includes Index.
ER  -