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      Digital & 4-Year Archive

      Scientific American July 31, 1915

      Apple Syrup and Concentrated Cider

      Methods for Economic Utilization of Unmarketable Apples

      • July 31, 1915

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      More in the July 31, 1915 issue of Scientific American
      • Aid to Astronomical Research
      • Geology in Relation to the Exact Sciences
      • The Medicine of the Old Testament—I
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