Reduction of hours of work in coal mines. International Labour Conference. Twenty-fifth session, Geneva, 1939. Questionnaire VI
| Institution: | International Institute of Social History |
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| Format: | TEXT |
| Published: |
International Labour Office,
1939.
Geneva : |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/EB89D4A1-E06E-402A-8C33-A956094DC745 |
| Published: | 1939. |
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