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The welfare of workers in mines other than coal mines
International Labour Office - 1975
Persistent link: https://www.econbiz.de/10000416706
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Industrial relations in mines other than coal mines
1957
Persistent link: https://www.econbiz.de/10003155575
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Coal mines
International Labour Office - 1938
Persistent link: https://www.econbiz.de/10003143634
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Statistics of hours and wages in the principal mining and manufacturing industries, incluing building and construction, and in agriculture
International Labour Office - 1938
Persistent link: https://www.econbiz.de/10002772779