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Preliminary account of Goldfield, Bullfrog, and other mining districts in southern Nevada /

By Ransome, F. L..
Washington, Govt. Print. Off., 1907 .
98, vi p. : , Subject series: A, Economic geology, 87; B, Descriptive geology, 106. | One map in pocket. | Issued also as House doc. no. 56, 59th Cong., 2d sess. | Includes index. 24 cm..

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Economic geology of the Georgetown quadrangle (together with the Empire district) Colorado,

By Spurr, Josiah Edward,.
Washington, Govt. Print. Off., 1908 .
422 p. , Four folded plates, including 2 maps, in pocket. 29 x 23 cm..

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Geology and ore deposits of the Bullfrog district, Nevada,

By Ransome, F. L..
Washington, Govt. print. off., 1910 .
130 p. 24 cm..

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