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Coal mine labor in Europe
Wright, Carroll Davidson, (1905)
The welfare of workers in mines other than coal mines
(1975)
Industrializing the Rockies : growth, competition, and turmoil in the coalfields of Colorado and Wyoming 1868 - 1914
Wolff, David A., (2003)
Labour conditions and discrimination in Southern Rhodesia (Zimbabwe)
Clarke, Duncan G., (1978)
Conciliation and arbitration procedures in labour disputes : a comparative study
(1980)
Conditions of work and quality of working life : a directory of institutions
Stoddart, L., (1981)