Pilkington, Roger <br/><br/>
How Ships are Navigated 

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 - London  Routledge & Kegan Paul  1962 
 - 139 p.   
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<br/><br/><label>Subjects--Index Terms: </label>How Ships are Navigated 
<br/><br/><label>Dewey Class. No.: </label>629.12:629.1.05