@misc{indiciae03e8867480dd,
  title = {Geohydrologic systems in Kansas — Geohydrology of the lower aquifer unit in the western interior plains aquifer system},
  author = {L. J. Combs and Cristi V. Hansen and R. J. Wolf},
  year = {1993},
  doi = {10.3133/ha722i},
  url = {https://pubs.usgs.gov/publication/ha722I},
  note = {Source identifier: ha722I}
}