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Night Landing Signals for War Aeroplanes

Two Luminous Circles That Help Airmen to Alight in Safety by Our Berlin Correspondent

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Scientific American Magazine Vol 111 Issue 9This article was originally published with the title “Night Landing Signals for War Aeroplanes” in Scientific American Magazine Vol. 111 No. 9 (), p. 144
doi:10.1038/scientificamerican08291914-144