@misc{indiciae680aba40daaa,
  title = {Geohydrologic systems in Kansas: Physical framework of the lower aquifer unit in the western interior plains aquifer system},
  author = {C. V. Hansen and J. M. Spinazola and R. J. Wolf},
  year = {1994},
  doi = {10.3133/ha722f},
  url = {https://pubs.usgs.gov/publication/ha722F},
  note = {Source identifier: ha722F}
}