@misc{indiciae69a620d5d7ac,
  title = {Geologic characteristics of the central stretch of the Ticona Channel, north-central Illinois},
  author = {B.A. Willems and D.H. Malone and A. Pugin},
  year = {2007},
  doi = {10.1306/eg.05030606002},
  url = {https://pubs.usgs.gov/publication/70031686},
  note = {Source identifier: 70031686}
}