Reduction of hours of work in coal mines.
Reduction of hours of work in coal mines.
Sixth item on the agenda.
- Geneva, International Labour Office, 1935.
- 30 p. 25 cm.
At head of title: Questionnaire VI. International Labour Conference. Twentieth session, Geneva, 1936.
l 36000038
Hours of labor.
Coal mines and mining.
HD7804 / I7 1936a
At head of title: Questionnaire VI. International Labour Conference. Twentieth session, Geneva, 1936.
l 36000038
Hours of labor.
Coal mines and mining.
HD7804 / I7 1936a