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      Scientific American August 21, 1909

      Kieselgur or Infusorial Earth

      Its many Varied uses

      • By O. Bechstein on August 21, 1909

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      More in the August 21, 1909 issue of Scientific American
      • Canning and Preserving Fruit.—III
      • Steam Turbines
      • The Sixth Conference of the International Commission of Meteorology
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