@misc{indiciae821836013e8e,
  title = {Oklahoma; a summary of activities of the U.S. Geological Survey, Water Resources Division in fiscal years 1991-92},
  author = {J. S. Havens},
  year = {1994},
  doi = {10.3133/ofr9438},
  url = {https://pubs.usgs.gov/publication/ofr9438},
  note = {Source identifier: ofr9438}
}