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    • Water-Power in the United States - Nature

      Nature· 12 hours ago

      III NORRIS AND WHEELER DAMS the side of the North American continent opposite to the valley of the Columbia River lies another notable valley the Tennessee Valley, mainly in the State of that ...

    • Indians of the South-Eastern United States - Nature

      Nature· 14 hours ago

      The historical Indian tribes of the south-eastern United States are diverse in language, but they share so many important characteristics that they form a cultural province. This is illustrated ...