TY  - BOOK
ED  - "International Labour Organization, coal mines committee(4th session) (1951 : Geneva)"
TI  - Coal Mines Committee :  General report
U1  - "X9(HZ551):9.1.N51t, J1.1-.3" 
PY  - 1951///
CY  - Geneva
PB  - ILO       
KW  - Minings
ER  -