@misc{indiciae526c05ea3045,
  title = {National water-quality assessment program; water use in the Rio Grande Valley, 1990},
  author = {S. F. Richey and S. R. Ellis},
  year = {1993},
  doi = {10.3133/ofr93456},
  url = {https://pubs.usgs.gov/publication/ofr93456},
  note = {Source identifier: ofr93456}
}