@misc{indiciae57a07209cfa3,
  title = {Oklahoma, a summary of activities of the U.S. Geological Survey, Water Resources Division, in fiscal years 1988-90},
  author = {John S. Havens},
  year = {1991},
  doi = {10.3133/ofr91492},
  url = {https://pubs.usgs.gov/publication/ofr91492},
  note = {Source identifier: ofr91492}
}