Powell, John Wesley 1834-1902.
American geologist and ethnologist who explored and mapped the Grand Canyon (1869 and 1871), directed the US Geological Survey (1881-1894), and classified many Native American languages.
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| 单词 | Powell |
| 释义 | Powell, John Wesley 1834-1902. American geologist and ethnologist who explored and mapped the Grand Canyon (1869 and 1871), directed the US Geological Survey (1881-1894), and classified many Native American languages. John Wesley Powell |
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