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      Knowledge is Power

      Scientific American January 09, 1915

      Measuring Human Intelligence

      A Progressive Series of Standardized Tests Used by the Public Health Service to Protect Our Racial Stock

      • By Howard A. Knox on January 9, 1915

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      More in the January 09, 1915 issue of Scientific American
      • "Notable Salvage Work Upon the Empress of Ireland, The Highest and Lowest Temperatures in the Atmosphere and more"
      • Recently Patented Inventions - January 9, 1915
      • Temperature in Plants
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