International code of signals 
IMO. 
 -  International Maritime Organization,  2021 
 - viii, 165 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>978-9-28011738-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Signals and signaling.
<br/><br/><label>Dewey Class. No.: </label>M 623.856 In61 2021