@misc{indiciae157a5646c5a7,
  title = {Geology and ground-water resources of Medina County, Texas},
  author = {Charles Lee Roy Holt},
  year = {1959},
  doi = {10.3133/wsp1422},
  url = {https://pubs.usgs.gov/publication/wsp1422},
  note = {Source identifier: wsp1422}
}