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      Scientific American April 1925

      Science and Money, April 1925

      A New Department for Investors

      • By E. E. Free on April 1, 1925

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      More in the April 1925 issue of Scientific American
      • Recently Patented Inventions, April 1925
      • The Krupp Turbine Locomotive
      • The Unusual Occupation of Inlaying Prints
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