TY  - BOOK
AU  - Popp, John T.
CN  - TN805.I3
CN  - TN805.I3
CY  - Chicago :
DA  - 1979.
ID  - 20423
KW  - Coal
KW  - Natural gas
PB  - State of Illinois, Institute of Natural Resources,
PP  - Chicago :
PY  - 1979.
T1  - Investigation of the gas content of coal seams in the vicinity of Charleston, Illinois /
TI  - Investigation of the gas content of coal seams in the vicinity of Charleston, Illinois /
ER  -