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Investigations and Experiments in the Guidonia Wind Tunnel (1939)
NASA Technical Reports Server (NTRS) · leaf 27
N.A.C.A. Technical Memorandum No. 901 Figs.19a,b,20a figure 208. Figure 20b.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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