Admiralty list of radio signals, volume 6, part 4 :  pilot services, vessel traffic services and port operations: Indian Sub-continent, South East Asia and Autralia. 

 - xxii, 362 pages ;  30 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio in navigation.