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  1. 1

    Mine economics sampling, valuation, organization, administration por Truscott, Samuel John, 1870-

    Publicado 1947
    Libro

    Mine economics sampling, valuation, organization, administration
  2. 2

    A textbook of ore dressing por Truscott, Samuel John 1870-

    Publicado 1923
    Libro

    A textbook of ore dressing

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