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    A practical hand-book for miners, metallurgists, and assayers comprising the most recent improvements in the disintegration, amalgation, smelting and parting of the precious ores por Silversmith, Julius

    Publicado em 1867
    Livro

    A practical hand-book for miners, metallurgists, and assayers comprising the most recent improvements in the disintegration, amalgation, smelting and parting of the precious ores

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