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The United States : facts and figures illustrating the physical geography of the country, and its matorial resources
Whitney, Josiah Dwight
Bok Engelsk 1889
The Yosemite guide-book : a description of the Yosemite Valley and the adjacent region of the Sierra Nevada, and of the big trees of California
Geological Survey of California
Bok Engelsk 1874
Report on the geological survey of the state Iowa : embracing the results of investigations made during portions of the years 1855, 56 & 57
James Hall, J.D. Whitney
Bok Engelsk 1858