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      Knowledge is Power

      Scientific American February 1929

      "Self-Resourse" for Gas-Filled Mines, Novel Drying Trick Applied in Dynamite Manufacture and more

      A Department Devoted to the Advancements Made in Industrial and Experimental Chemistry

      • February 1, 1929

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      More in the February 1929 issue of Scientific American
      • Are We Slowing Down?, Employers' Shop Rights and more
      • From the Scrap-book of Science, February 1929
      • Picturing Skill in Golf
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