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Windmills in the light of modern research (1928)
NASA Technical Reports Server (NTRS) · leaf 28
N.A.C.A. Technical Memorandum No.474 Figs.1,2,3,4,5,6 □ Fig.2 Forces acting on a wing. Fig.l -u Fig. 4 Fig.3NASA Technical Reports Server (NTRS)
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