@misc{indiciae61d64412365c,
  title = {The U.S. Geological Survey Federal-State cooperative water-resources program},
  author = {Bruce K. Gilbert and Thomas J. Buchanan},
  year = {1981},
  doi = {10.3133/ofr81691},
  url = {https://pubs.usgs.gov/publication/ofr81691},
  note = {Source identifier: ofr81691}
}