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Albatros Commercial Airplane L 73 (1926)
NASA Technical Reports Server (NTRS) · leaf 14
Figa. 2,3,5 & 6 N.A.C.A. Aircraft Circular No. 16 Fig. 2 Albatros two-engine commercial airplane L73 7&t+2 A.S.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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