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      Knowledge is Power

      Scientific American August 05, 1911

      A Grain Tester for Commercial Use

      A Moisture Tester for Grain and Other Substances and How to use it

      • By J. W. T. Duvel on August 5, 1911

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      More in the August 05, 1911 issue of Scientific American
      • A New Ground Sloth Group
      • Measurinǵ the Laborer's Worth
      • Radiometer Motion Stopped by a very High Vacuum
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