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      Knowledge is Power

      Scientific American August 21, 1920

      Return Loads Bureau Idea in England, Converting Garbage into a Real Asset

      • August 21, 1920

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      More in the August 21, 1920 issue of Scientific American
      • Recently Patented Inventions - August 21, 1920
      • The World's Largest Crane
      • Reclaiming Salt Surfeited Soils
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