@misc{indiciae97a5aeeb773c,
  title = {Surface- and ground-water interaction and hydrologic budget of the Missouri River Valley aquifer between Yankton, South Dakota, and St. Louis, Missouri},
  author = {E. R. Hedman and Donald G. Jorgensen},
  year = {1990},
  doi = {10.3133/ha721},
  url = {https://pubs.usgs.gov/publication/ha721},
  note = {Source identifier: ha721}
}