@misc{indiciae912f64f0e9ef,
  title = {Water resources data for Illinois, water year 1971},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1972},
  doi = {10.3133/wdril711},
  url = {https://pubs.usgs.gov/publication/wdrIL711},
  note = {Source identifier: wdrIL711}
}