@misc{indiciaee35b6d658a7e,
  title = {The deep channel and alluvial deposits of the Ohio Valley in Kentucky},
  author = {Eugene H. Walker},
  year = {1957},
  doi = {10.3133/wsp1411},
  url = {https://pubs.usgs.gov/publication/wsp1411},
  note = {Source identifier: wsp1411}
}