UK Hydrographic Office. <br/><br/>
Admiralty List of Radio Signals : Maritime Radio Stations Volume 1 

 - 3rd ed. 
 - UK   UK Hydrographic Office.  2022 
 - xx, 464p. 
<br/><br/><label>ISBN: </label>9780707747347 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Purpose of Admiralty Radio Signals<br/>Global Communication Network<br/>Maritime Security Threats
<br/><br/><label>Dewey Class. No.: </label>623.8  / UKH