TY  - BOOK
T1  - Subsurface geology and coal resources of the Pennsylvanian system in Douglas, Coles, and Cumberland Counties, Illinois.
DA  - 1959.
CY  - Urbana,
AU  - Clegg, Kenneth Edward.
VL  - 271
CN  - QE105
CN  - QE105
PP  - Urbana,
PY  - 1959.
N1  - Cover title.
ID  - 4410
KW  - Coal
KW  - Geology, Stratigraphic
TI  - Subsurface geology and coal resources of the Pennsylvanian system in Douglas, Coles, and Cumberland Counties, Illinois.
ER  -