00534nam a2200181Ia 4500003000900000008004100009040001600050080001500066110002300081245008500104260003200189300001400221490003900235650001900274650002500293650001900318650001500337IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a521.9bUSN  aUnited States Navy 0aAir navigationbpt. VII, nautical astronomy and celestial navigationcU. S. Navy  aNew YorkbMcGraw-Hillc1944  aix, 198p.  aFlight preparation training series  aAir navigation  aCelestial navigation  aNASA thesaurus  aNavigation