TY  - BOOK
AU  - Ward, Colin R.
CN  - QE105
CN  - QE105
CY  - Urbana :
DA  - 1977.
ID  - 9763
KW  - Coal
KW  - Coal
KW  - Clay
N1  - Cover title.
PB  - Illinois State Geological Survey,
PP  - Urbana :
PY  - 1977.
T1  - Mineral matter in the Springfield-Harrisburg (no.5) coal member in the Illinois basin /
TI  - Mineral matter in the Springfield-Harrisburg (no.5) coal member in the Illinois basin /
ER  -