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      Digital & 4-Year Archive

      Scientific American August 20, 1892

      Half-Tone Photo-Block Printing

      • By Colonel J. Waterhouse on August 20, 1892

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      More in the August 20, 1892 issue of Scientific American
      • An Oil-Firing System
      • Leading of the Water of the Avre to Paris
      • Silica in Plants
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