TY  - RPRT
TI  - Water resources data Illinois, water year 1981; Volume 1, Illinois except Illinois River basin
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1982
DO  - 10.3133/wdril811
UR  - https://pubs.usgs.gov/publication/wdrIL811
ID  - wdrIL811
ER  -