@misc{indiciae1f6baeddc5b9,
  title = {Water resources of east-central Iowa},
  author = {K.D. Wahl and G.A. Ludvigson and G.L. Ryan and W.C. Steinkampf},
  year = {1978},
  url = {https://pubs.usgs.gov/publication/70168656},
  note = {Source identifier: 70168656}
}