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The Rohrbach "ROBBE" RO VII seaplane : military or commercial (1927)

NASA Technical Reports Server (NTRS) · leaf 8

An illustration from The Rohrbach "ROBBE" RO VII seaplane : military or commercial, 1927, leaf 8
N.A.C.A. Aircraft Circular No.36

NASA Technical Reports Server (NTRS)

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

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