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Nieuport-Delage 590 Military airplane (French) : a two-place high-wing cantilever monoplane (1932)
NASA Technical Reports Server (NTRS) · leaf 8
N.A.C.A. Aircraft Circular No,173 FigB.2,3,5 Pig,5 Demotmtatle leading edge.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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