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      Scientific American August 10, 1912

      Langley's Book on Aviation

      A Classic in Practical Aerodynamics

      • August 10, 1912

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      More in the August 10, 1912 issue of Scientific American
      • Iron, Vanadium and Carbon in Steel
      • The Cryogenic Laboratory at Leyden
      • The Manufacture of Chili Saltpeter
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