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The Wibault 280 T.10 commercial airplane (French) : an all-metal, cantilever, low-wing monoplane (1931)
NASA Technical Reports Server (NTRS) · leaf 7
H.A.C.A. Aircraft Circular No. 140 Figs. 3,3f7,8NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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