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      Knowledge is Power

      Scientific American May 05, 1917

      Search for Typhoid and Paratyphoid Baccilli in Fæces and Water

      • May 5, 1917

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      More in the May 05, 1917 issue of Scientific American
      • A One-Quarter Horse-Power Single-Phase Induction Motor—II
      • Conversion of Fruits and Vegetables into Dried Products
      • Removing the Taste Due to Algæ in Drinking Water
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