TY  - RPRT
TI  - Catalog of pre-Cretaceous geologic drill-hole data from the upper Mississippi Embayment
AU  - R. L. Dart
PY  - 1992
DO  - 10.3133/ofr90260
UR  - https://pubs.usgs.gov/publication/ofr90260
ID  - ofr90260
ER  -