TY  - BOOK
ED  - International Labour Office. Sectoral Activities Programme.
ED  - International Labour Organization 
TI  - Productivity and its impact on employment and labour relations in th e coal mining industry / 
PY  - 1995///
CY  - Geneva : 
PB  - International Labour Office, 
KW  - Coal miners
KW  - Labor productivity
KW  - Coal mines and mining
ER  -