Admiralty List of Radio Signals, Volume 5 :   global maritime distress and safety system /  
Great Britain. Hydrographic Office. 
 - 2nd ed. 
 - Taunton :  United Kingdom Hydrographic Office,  2021. 
 - xxii, 492 p. :  pbk ;  30 cm. 
<br/><br/><label>ISBN: </label>9780707747132 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio Signals.<br/>Distress Communications.<br/>Safety System.
<br/><br/><label>Dewey Class. No.: </label>623.89   / ADM