TY  - BOOK
AU  - Willman, H. B.
CN  - QE105
CN  - QE105
CN  - QE645
CY  - Urbana :
DA  - 1975.
ID  - 5329
KW  - Geology, Stratigraphic
KW  - Geology
N1  - Includes index.
PB  - Illinois State Geological Survey,
PP  - Urbana :
PY  - 1975.
T1  - Handbook of Illinois stratigraphy /
TI  - Handbook of Illinois stratigraphy /
ER  -