@misc{indiciae4ee590375b2e,
  title = {Ground-water levels in observation wells in Oklahoma, 1975},
  author = {Robert L. Goemaat},
  year = {1977},
  doi = {10.3133/ofr77238},
  url = {https://pubs.usgs.gov/publication/ofr77238},
  note = {Source identifier: ofr77238}
}