TY  - BOOK
T1  - Lithostratigraphy and depositional environments of the Maquoketa Group (Ordovician) in northern Illinois /
DA  - 1983.
CY  - Champaign, Ill. :
AU  - Kolata, Dennis R.
CN  - QE105 .A45 no.528
CN  - QE105
PB  - Illinois State Geological Survey,
PP  - Champaign, Ill. :
PY  - 1983.
N1  - Two folded maps in pocket.
ID  - 68437
KW  - Geology, Stratigraphic
KW  - Geology
TI  - Lithostratigraphy and depositional environments of the Maquoketa Group (Ordovician) in northern Illinois /
ER  -