TY  - RPRT
TI  - Water-resources activities of the U.S. Geological Survey in Illinois, 1989
AU  - M. L. Garrelts
PY  - 1990
DO  - 10.3133/ofr89625
UR  - https://pubs.usgs.gov/publication/ofr89625
ID  - ofr89625
ER  -