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      Knowledge is Power

      Scientific American March 29, 1919

      Radium and Radio-Activity—I

      A Consideration of Some of the Physical and Chemical Aspects

      • By Charles H. Viol on March 29, 1919

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      More in the March 29, 1919 issue of Scientific American
      • Behavior of Crystals in Liquid Air
      • Production in the Sea
      • Tabanuco Gum or Porto Rican Elemi
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