Blewitt, Mary <br/><br/>
Celestial navigation for yachtsmen 

 - 5th ed. 
 - London  Edward  1971 
 - 66p.   
<br/><br/>   
<br/><br/><label>ISBN: </label>
<br/><br/><label>ISSN: </label>
<br/><br/><label>Subjects--Index Terms: </label>Navigation  Nautical astronomy  Aeronautical astronomy 
<br/><br/><label>Dewey Class. No.: </label>527:521