@misc{indiciae81f4d4cbd48a,
  title = {Refraction seismic studies in the Miami River, Whitewater River, and Mill Creek valleys, Hamilton and Butler Counties, Ohio},
  author = {Joel S. Watkins},
  year = {1963},
  doi = {10.3133/ofr63133},
  url = {https://pubs.usgs.gov/publication/ofr63133},
  note = {Source identifier: ofr63133}
}