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Structural analysis and design of airplanes (1920)
United States. Army. Air Corps · [Washington] · leaf 149
££/?& C/93/PA/6 System 5/oe £l£i//?T/OM £6+\*l-^/&.9-4Airplanes
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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