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The Breguet 270 General-Purpose Military Airplane (French) : A Two-Seat All-Steel Sesquiplane (1930)
NASA Technical Reports Server (NTRS) · leaf 18
N.A.C.A. Aircraft Circular No.127 Figs.10,11,12,13,14,15,16NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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