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      Knowledge is Power

      Scientific American November 11, 1871

      Improvement in Pavements--Artificial Stone Flagging for Sidewalks

      • November 11, 1871

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      More in the November 11, 1871 issue of Scientific American
      • Correspondence- November 4, 1871
      • Psychic Force--Further Experiments by Dr Crookes--Reply to his Opponents
      • The Health of Baron Liebig
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