419 resultados para Gold mines and mining


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Consists of transactions of various Branches and Divisions of the Institute.

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Imprint varies.

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Each issue also has a distinctive title.

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This report is the fourth in a series to assess the availability of coal resources for future mining in Illinois.

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GeoRef

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Issues for 1920-1948 called also v. [1]-29.

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"Import duties" (p.141-393) in English and Spanish.

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