Maps, Aerial Photographs and Aerial Navigation International meeting on radio aids tot marine navigation May 1946 Volume II; Radio navigation, radar and position fixing systems for use in marine navigation Radar techniques for detection tracking and navigation Luchtvaartwetten en verkeersvoorschriften : supplement aanvullende wetten en bepalingen van belang voor Verkeersvlieger en Navigator Mathematics of map projections and navigation Electronic Navigation Aircraft navigation part I : theory , part II : practice Air navigations : theory and practice Air navigation - part seven : nautical astronomy & Celestial Navigation Air transport navigation : for pilots and navigators Astronomical navigation : A handbook for Ariators Luchtvaartnavigatie voor navigator 2e klasse en vliegbewijs B : deel I