TY  - BOOK
AU  - Great Britain. Hydrographic Office.
TI  - Admiralty List of Radio Signals, Volume 5 : Global maritime distress and safety system (GMDSS)
SN  - 9780707744490
U1  - 623.89 ADM 
CY  - Taunton
KW  - Global Maritime Distress Safety System
KW  - GMDSS
KW  - Radio Signals
ER  -