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Exploration of the Colorado River of the West and its tributaries : explored in 1869, 1870, 1871, and 1872, under the direction of the Secretary of the Smithsonian Institution.

Atlas accompanying the report on the geology of a portion of the Uinta Mountains and a region of country adjacent thereto / by J.W. Powell.

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John Wesley Powell

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Atlas accompanying the report on the geology of a portion of the Uinta Mountains and a region of country adjacent thereto / by J.W. Powell.

Exploration of the Colorado River of the West and its tributaries : explored in 1869, 1870, 1871, and 1872, under the direction of the Secretary of the Smithsonian Institution.