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      Scientific American January 11, 1919

      The Macoa Indians of Venezuela—II

      Expedition Among a Little Known but Ancient Race

      • By Theodoor De Booy on January 11, 1919

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      More in the January 11, 1919 issue of Scientific American
      • Cadmium in Brass
      • New Stellar Photometer
      • Vulcanization without Sulphur by Ostromyslenski's Method
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