@misc{indiciae17dcebec59fc,
  title = {Seismic refraction surveys in the vicinity of Eagle City, Clark County, Ohio},
  author = {Jerry H. Hassemer and Joel S. Watkins and Norman G. Bailey},
  year = {1966},
  doi = {10.3133/ofr6658},
  url = {https://pubs.usgs.gov/publication/ofr6658},
  note = {Source identifier: ofr6658}
}