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- catalog contributor b8887923.
- catalog contributor b8887924.
- catalog created "1935.".
- catalog date "1935".
- catalog date "1935.".
- catalog dateCopyrighted "1935.".
- catalog extent "30 p.".
- catalog issued "1935".
- catalog issued "1935.".
- catalog language "eng".
- catalog publisher "Geneva, International Labour Office,".
- catalog subject "Coal mines and mining.".
- catalog subject "HD7804 .I7 1936".
- catalog subject "HD7804 .I7 1936a".
- catalog subject "Hours of labor.".
- catalog title "Reduction of hours of work in coal mines. Sixth item on the agenda.".
- catalog type "text".