TY  - BOOK
TI  - Admiralty list of radio signals volume 6, part 1 : pilot services, vessel traffic services and port operations: United Kingdom and Europe (excluding A
U1  - M 623.89 Ad6 2014 
PB  - The United Kingdom Hydrographic Office.
KW  - Radio in navigation
N1  - 600 Technology (App Sciences)
ER  -