Mineral survey no. 20783, Colorado Land District : field notes of the survey of the mining claim of American Smelting and Refining Company / by J.M. Kleff. 1954 Jan. 26.

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Mineral survey no. 20783, Colorado Land District : field notes of the survey of the mining claim of American Smelting and Refining Company / by J.M. Kleff. 1954 Jan. 26.

31 leaves ; 37 cm.

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Kleff, J. M.

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American Smelting and Refining Company

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