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The Dewoitine D.500 pursuit airplane (French) : an all-metal cantilever low-wing monoplane (1933)
NASA Technical Reports Server (NTRS) · leaf 8
Pigs. 4,5,6,7 N.A.C.A. Aircraft Circular 180NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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