TY  - BOOK
T1  - Geologic disturbances in Illinois coal seams /
DA  - 1983.
CY  - Champaign, Ill. :
AU  - Nelson, W. John.
VL  - 530
CN  - QE105
CN  - QE105
PB  - Illinois State Geological Survey,
PP  - Champaign, Ill. :
PY  - 1983.
ID  - 90230
KW  - Coal
KW  - Coal mines and mining
TI  - Geologic disturbances in Illinois coal seams /
ER  -