@misc{indiciae89775c0d60c4,
  title = {Trends in ground-water levels in Wisconsin through 1981},
  author = {R.M. Erickson and R. D. Cotter},
  year = {1983},
  url = {https://pubs.usgs.gov/publication/70157456},
  note = {Source identifier: 70157456}
}