Blewitt Mary <br/><br/>
Navigation for yachtsmen / 
Mary Blewitt. 
 - 5th ed 
 - London :  Stanford Maritime,  1987. 
 - 101 p. :  ill. ;  22 cm 
<br/><br/> Previous ed.: 1979  Includes index 
<br/><br/><label>ISBN: </label>0540072834 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Navigation<br/>Yachting
<br/><br/><label>LC Class. No.: </label>VK555 
<br/><br/><label>Dewey Class. No.: </label>623.89/0247971