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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 17
N.A.C.A. Aircraft Circular No.137 Figs.3,3,4,5,6f7f8,9 — "—■ 1 -• - . : . ■ ■Zt->. t yNASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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