@misc{indiciae941b80be3a4c,
  title = {Floods in Big Rock quadrangle, northeastern Illinois},
  author = {Roman T. Mycyk and Gerald L. Walter and Billie L. McDonald},
  year = {1973},
  doi = {10.3133/ha472},
  url = {https://pubs.usgs.gov/publication/ha472},
  note = {Source identifier: ha472}
}