@misc{indiciaec0a0c3997230,
  title = {Ground Water Atlas of the United States: Segment 4, Oklahoma, Texas},
  author = {Paul D. Ryder},
  year = {1996},
  doi = {10.3133/ha730e},
  url = {https://pubs.usgs.gov/publication/ha730E},
  note = {Source identifier: ha730E}
}