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Heinkel He 64 C sport airplane (German) : a two-seat low-wing cantilever monoplane (1933)
NASA Technical Reports Server (NTRS) · leaf 7
N.A.C.A. Aircraft Circular No.175 Figs. 2,3,4,7 Figure 2.- The latest Heinkel He.64c monoplane. Figure 3.- A three-quarter rear view of the Heinkel He.64c. / … From "Flight"NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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