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Stipa Monoplane with Venturi Fuselage (1934)
NASA Technical Reports Server (NTRS) · leaf 11
N.A.C.A. Technical Memorandum No. 753 Figs. 4,5,6 Figure 6. Views of the Oaproni "Stipa" airplaneNASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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