TY  - BOOK
ED  - International Labour Office
ED  - International Labour Organisation.
TI  - Productivity in coal mines: Third item on the adgenda
AV  - TN803 .I73
PY  - 1951///
CY  - Geneva
PB  - n.p.
KW  - Coal mines and mining
KW  - Coal miners
KW  - Labor productivity
N1  - At head of title: Report 3. International Labour Organisation. Coal Mines Committee. 4th session, Geneva, 1951
ER  -