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      Knowledge is Power

      Scientific American June 1925

      The Scientific American Digest, June 1925

      A review of the technical and trade press, consisting of abstracts from leading articles announcing the newest developments in industry and engineering

      • By Albert G. Ingalls on June 1, 1925

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      More in the June 1925 issue of Scientific American
      • Herbert Hoover and the Patent Office
      • News for Inventors, June 1925
      • Out of Doors With the Earth
      View Full Contents
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