TY  - BOOK
AU  - Parham, Walter Edward.
CN  - QE105
CN  - QE105
CY  - Urbana,
DA  - 1961.
ID  - 19719
KW  - Clay
KW  - Geology, Stratigraphic
N1  - Cover title.
PP  - Urbana,
PY  - 1961.
T1  - Lower Pennsylvanian clay resources of Rock Island, Mercer, and Henry Counties, Illinois.
TI  - Lower Pennsylvanian clay resources of Rock Island, Mercer, and Henry Counties, Illinois.
ER  -