TY  - BOOK
AU  - Thwaites,F.T.
TI  - Stratigraphy and geologic structure of Northern Illinois,: with special reference to underground water supplies,
AV  - QE105 .T5
PY  - 1927///
CY  - Urbana, Illinois, [Springfield
PB  - Jeffersons Printing and Stationery Co.]
KW  - Geology
KW  - Illinois
KW  - Water-supply
KW  - Groundwater
N1  - At head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey; Plates folded in pocket; Bibliographical footnotes
ER  -