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Light airplanes of France, Germany, Italy, Belgium, Holland, Czechoslovakia and Lithuania (1925)
NASA Technical Reports Server (NTRS) · leaf 43
40 HP. 4 cylinder Gregorie engine. Fig.6 "Demonty^Poncelet" two-seat light airplane.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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