@misc{indiciae634abf17cef1,
  title = {Processing water-chemistry data, Gulf Coast aquifer systems, south-central United States; with summary of dissolved-solids concentrations and water types},
  author = {R. A. Pettijohn},
  year = {1986},
  doi = {10.3133/wri864186},
  url = {https://pubs.usgs.gov/publication/wri864186},
  note = {Source identifier: wri864186}
}