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      Advocate for Science

      Scientific American November 1921

      Grouping Our Power Plants

      The Superpower Survey's Impressive Figures, Which Afford Plenty of Food for Thought

      • By Robert G. Skerrett

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      More in the November 1921 issue of Scientific American
      • A Study in Offspring Herds
      • From Opium to Hash Eesh
      • Linotype Slugs and Catalogues
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