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An Introduction to the Laws of Air Resistance of Aerofoils (1920)
NASA Technical Reports Server (NTRS) · leaf 40
AN INTRODUCTIOBT TO THE LAWS OF AIB BESISTANCE OF AEROFOILS. … J Flo. 37 Fio. 3(1.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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