TY  - BOOK
T1  - Marine pool, Madison County, Illinois, Silurian-reef producer /
DA  - c1948.
CY  - Urbana :
AU  - Lowenstam, Heinz Adolf,
VL  - no. 131.
CN  - QE105
CN  - QE105
PB  - Illinois State Geological Survey,
PP  - Urbana :
PY  - c1948.
ID  - 8677
KW  - Reefs.
KW  - Petroleum
TI  - Marine pool, Madison County, Illinois, Silurian-reef producer /
ER  -