TY  - BOOK
AU  - Du Bois, Ernest Paul,
AU  - Bays, Carl Andrew,
CN  - QE662
CY  - Urbana :
DA  - 1945.
ID  - 10995
KW  - Geology
KW  - Petroleum
KW  - Geology, Stratigraphic
PB  - Illinois State Geological Survey,
PP  - Urbana :
PY  - 1945.
T1  - Subsurface relations of the Maquoketa and "Trenton" formations in Illinois :petroleum possibilities of Maquoketa and "Trenton" in Illinois /
TI  - Subsurface relations of the Maquoketa and "Trenton" formations in Illinois :petroleum possibilities of Maquoketa and "Trenton" in Illinois /
VL  - no. 105.
ER  -