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The Hanriot H 431 military airplane (French) : a general purpose biplane (1931)

NASA Technical Reports Server (NTRS) · leaf 15

An illustration from The Hanriot H 431 military airplane (French) : a general purpose biplane, 1931, leaf 15

NASA Technical Reports Server (NTRS)

Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.

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