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Structural analysis and design of airplanes (1920)
United States. Army. Air Corps · [Washington] · leaf 232
ESI Fig. 136. Rear Spar in Orenco Stabilizer 212 Art. 147 Bracing Top … Fig. 137. Leading Edge of Orenco ElevatorAirplanes
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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