@misc{indiciae1252fbeeb53b,
  title = {Geomorphology and Quaternary geology of the Owensboro quadrangle, Indiana and Kentucky},
  author = {Louis L. Ray},
  year = {1965},
  doi = {10.3133/pp488},
  url = {https://pubs.usgs.gov/publication/pp488},
  note = {Source identifier: pp488}
}