UK Hydrographic Office.
Admiralty List of Radio Signals : Maritime Radio Stations Volume 1 - 3rd ed. - UK UK Hydrographic Office. 2022 - xx, 464p.
9780707747347
Purpose of Admiralty Radio Signals
Global Communication Network
Maritime Security Threats
623.8 / UKH
Admiralty List of Radio Signals : Maritime Radio Stations Volume 1 - 3rd ed. - UK UK Hydrographic Office. 2022 - xx, 464p.
9780707747347
Purpose of Admiralty Radio Signals
Global Communication Network
Maritime Security Threats
623.8 / UKH