@misc{indiciaef8515114fab1,
  title = {Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky – Digital spatial database},
  author = {Susan Rhea},
  year = {1997},
  doi = {10.3133/ofr97681},
  url = {https://pubs.usgs.gov/publication/ofr97681},
  note = {Source identifier: ofr97681}
}