The physical geology of the Grand Cañon district Dutton, Clarence E. (Clarence Edward), 1841-1912 creator text book Washington Govt. Print. Off 1882 1882
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ENG Cover title. Extract from the annual report of the director of the U.S. Geological survey, 1880-1881. Arizona Geology Grand Canyon (Ariz.) Utah QE75 .A6 1880/81 https://www.biodiversitylibrary.org/bibliography/61115 2950121 10.5962/bhl.title.61115 U.S. Geol. Survey Lib.