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Effect of speed on economy of airship traffic (1925)
NASA Technical Reports Server (NTRS) · leaf 58
N.A.C.A. Technical Memorandum No. 302 Figs. 7 & 8 0 100000 200000 300000 V, m3 Fig. 7 … Fig. 8NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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