Admiralty list of radio signals, volume 2 : radio aids to navigation, satelite navigation systems, legal time, radio time signals and electronic posit 

 -  The United Kingdom Hydrographic Office.  2007 
 - xxiv, 280 pages 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio in navigation.
<br/><br/><label>Dewey Class. No.: </label>M 623.89 Ad6 2007