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      Knowledge is Power

      Scientific American January 21, 1911

      Women and Scientific Research, Sea Water a Liquid Food, The Speaking Clock

      • January 21, 1911

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      More in the January 21, 1911 issue of Scientific American
      • Abstracts from Current Scientific Periodicals- January 21, 1911
      • Our Smokeless Cannon Powder the Best
      • The Man-Machine
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