Blewitt, Mary <br/><br/>
Navigation for Yachtsmen/ 
Mary Blewitt 
 - 2nd ed. 
 - London:  Iliffe books,  c1968 
 - 121 p.;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> £ 3.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Navigation<br/>Light houses<br/>Signals and signaling<br/>Pilots and pilotage
<br/><br/><label>Dewey Class. No.: </label>623.89