@misc{indiciae8cfbd3dd9d2b,
  title = {Preliminary isoseismal map and intensity distribution for the southeastern Illinois earthquake of June 10, 1987},
  author = {B.G. Reagor and L. R. Brewer},
  year = {1987},
  doi = {10.3133/ofr87578},
  url = {https://pubs.usgs.gov/publication/ofr87578},
  note = {Source identifier: ofr87578}
}