@misc{indiciae811ab0009c4a,
  title = {Hydrogeologic maps of the Central Oklahoma Aquifer, Oklahoma},
  author = {Scott C. Christenson and Robert B. Morton and Benard A. Mesander},
  year = {1990},
  doi = {10.3133/ofr90579},
  url = {https://pubs.usgs.gov/publication/ofr90579},
  note = {Source identifier: ofr90579}
}