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  1. 1

    The world coal-mining industry.

    יצא לאור 1975
    ספר

    The world coal-mining industry.
  2. 2

    The practice of industrial medicine מאת Lloyd Davies, Trevor Arthur

    יצא לאור 1957
    ספר

    The practice of industrial medicine
  3. 3

    Beyond nationalization the labor problems of British coal. מאת Baldwin, George Benedict

    יצא לאור 1955
    ספר

    Beyond nationalization the labor problems of British coal.
  4. 4

    The miner's case and the public interest a documented chronology מאת Wieck, Edward A.

    יצא לאור 1947
    ספר

    The miner's case and the public interest a documented chronology
  5. 5

    The four hour day in coal a study of the relation between the engineering of the organization of work and the discontent among the workers in the coal mines מאת Archbald, Hugh

    יצא לאור 1922
    ספר

    The four hour day in coal a study of the relation between the engineering of the organization of work and the discontent among the workers in the coal mines

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