TY  - BOOK
ED  - International Labour Office.
ED  - International Labor Conference
TI  - Reduction of hours of work in coal mines
AV  - HD7804  I7 1936a
PY  - 1935///
CY  - Geneva
PB  - International Labour Office
KW  - Hours of labor
KW  - Coal mines and mining
N1  - At head of title: Questionnaire VI. International Labour Conference. Twentieth session, Geneva, 1936
ER  -