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The internal work of the wind (1893)
Langley, S. P. (Samuel Pierpont), 1834-1906 · Washington : Smithsonian Institution · leaf 160
Pl.X OF DYNAMOMETER. 'OSITION OF HRONOGRAPH BARREL .P.LANGLEY.Aeronautics · Winds
Internet Archive · University of California Libraries · Public domain (published before 1931). Free to use for anything.
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