TY  - JOUR
AU  - Illinois State Geological Survey
PY  - 1924
DA  - 1924/1968/
TI  - Report of investigations
T2  - Ill., State Geol. Surv., Rep. Invest
PB  - Survey
CY  - Urbana, Ill.
SN  - 0073-5124
LA  - English
N1  - Illinois State Geological Survey
ID  - 169292312
ER  -