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    Miners' wages and the cost of coal; an inquiry into the wages system in the bituminous coal industry and its effects on coal costs and coal conservation Tekijä Lubin, Isador 1896-

    Julkaistu 1924
    Kirja

    Miners' wages and the cost of coal; an inquiry into the wages system in the bituminous coal industry and its effects on coal costs and coal conservation

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