United States, Navy. <br/><br/>
Aircraft navigation manual / 

 - Washington D C :  Government Printing Office,  1941. 
 - vii, 258 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Celestial navigation<br/>Aircraft navigation<br/>Dead reckoning
<br/><br/><label>Dewey Class. No.: </label>629.132  / AIR