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      Knowledge is Power

      Scientific American July 17, 1915

      Economy in Study

      Psychological and Physiological Points on How to Study to the Best Advantage

      • By George Van Ness Dearborn on July 17, 1915

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      More in the July 17, 1915 issue of Scientific American
      • Facts about Thunderstorms
      • Problems of Geographic Influence
      • A Radio Generator for Amateurs
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