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The span as a fundamental factor in airplane design (1928)
NASA Technical Reports Server (NTRS) · leaf 41
NiA»G4A. t^chhibai Memorandum N6 Figs. 1,2, 3,4,5 Fig.l U Tat u Fig, 2 r w.s … V Fig.oNASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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