Walling, S. A.  <br/><br/>
Elementary marine navigation 

 - 1st ed. 
 - Cambridge  Cambridge university press  1944 
 - 78 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Navigation
<br/><br/><label>Dewey Class. No.: </label>623.89  / W211