@misc{indiciae877b150a2e54,
  title = {Preliminary geologic map of part of the Levias-Crittenden Spring fault system, Crittenden County, Kentucky},
  author = {G. C. Hardin and R. D. Trace and W.H. Hass and R. W. Lemke and A.H. Sutton},
  year = {1944},
  doi = {10.3133/ofr4412},
  url = {https://pubs.usgs.gov/publication/ofr4412},
  note = {Source identifier: ofr4412}
}