TY  - BOOK
ED  - International Labour Office
ED  - International Labor Conference
TI  - Hours of work in coal mines: Item II on the agenda
AV  - HD5119 .M615 1931
U1  - 331.8182233 
PY  - 1931///
CY  - Geneva
KW  - Coal mines and mining
KW  - Hours of labor
KW  - Coal miners
KW  - Lignite
N1  - At head of title: Report 2. International Labour Conference. 15th sess., Geneva, 1931
ER  -