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      Scientific American May 22, 1920

      The Crop Factory, Steam Locomotives and the Coal Bill and more

      Can Gardening be Made a Standardized Industry, Independent of the Elements?

      • By Alexandre Livventaal on May 22, 1920

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      More in the May 22, 1920 issue of Scientific American
      • Correspondence - May 22, 1920
      • Open-Air Mining of Coal by Electric Shovels
      • Dismantling a City
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