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      Knowledge is Power

      Scientific American March 21, 1885

      Dobson and Barlow's Improvements in Heilmann's Combers

      • March 21, 1885

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      More in the March 21, 1885 issue of Scientific American
      • A Visit to Canada and the United States in the Year 1884
      • Machine for Polishing Boots and Shoes
      • The House of a Thousand Terrors, Rotterdam
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