@misc{indiciaee75f644c1ca1,
  title = {Regional Stratigraphy and Petroleum Systems of the Illinois Basin, U.S.A.},
  author = {Christopher S. Swezey},
  year = {2009},
  doi = {10.3133/sim3068},
  url = {https://pubs.usgs.gov/publication/sim3068},
  note = {Source identifier: sim3068}
}