@misc{indiciaeb37c0711fc49,
  title = {Hydrologic maps of Ogallala Aquifer, west-central Kansas},
  author = {Lloyd E. Dunlap and Joseph M. Spinazola},
  year = {1981},
  doi = {10.3133/ofr81908},
  url = {https://pubs.usgs.gov/publication/ofr81908},
  note = {Source identifier: ofr81908}
}