@misc{indiciaeba5c29f89542,
  title = {A hydrogeologic study of the ground-water reservoirs contributing base runoff to Four Mile Creek, east-central Iowa},
  author = {George R. Kunkle},
  year = {1968},
  doi = {10.3133/wsp1839o},
  url = {https://pubs.usgs.gov/publication/wsp1839O},
  note = {Source identifier: wsp1839O}
}