@misc{indiciae96c7dd9aac44,
  title = {Water-level changes in the high plains regional aquifer, northwestern Oklahoma, predevelopment to 1980},
  author = {J.S. Havens},
  year = {1983},
  doi = {10.3133/wri834073},
  url = {https://pubs.usgs.gov/publication/wri834073},
  note = {Source identifier: wri834073}
}