@misc{indiciae7c73f4149fa0,
  title = {Hydrogeology of the Silurian and Devonian carbonate-rock aquifer system in the Midwestern Basins and Arches Region of Indiana, Ohio, Michigan, and Illinois},
  author = {George D. Casey},
  year = {1994},
  doi = {10.3133/ofr93663},
  url = {https://pubs.usgs.gov/publication/ofr93663},
  note = {Source identifier: ofr93663}
}