@misc{indiciae071d2ce7cc37,
  title = {Refraction seismic survey of parts of the Little Miami River and Scioto River valleys, Ohio},
  author = {Joel S. Watkins and Norman G. Bailey},
  year = {1964},
  doi = {10.3133/ofr64160},
  url = {https://pubs.usgs.gov/publication/ofr64160},
  note = {Source identifier: ofr64160}
}