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      Knowledge is Power

      Scientific American August 1923

      Immunizing Cabbage by Natural Selection

      How Nature's Standard Biological Process Is Adopted and Speeded Up by Man

      • By Robert G. Skerrett on August 1, 1923

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      More in the August 1923 issue of Scientific American
      • Concrete in the Making
      • Insect-Eating Insects
      • Mechanical Engineering Notes, August 1923
      View Full Contents
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