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Prospective development of giant airplanes (1928)
NASA Technical Reports Server (NTRS) · leaf 8
N.A.C.A. Technical ^tom.ndum Wo.463 Figs. 1,5 (Side view) (115 a) … Speed 160 km/h SB (Ground plan) Fig.5 Karl Grulich's 10000HP. giant seaplane project.NASA Technical Reports Server (NTRS)
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