@misc{indiciaeec549e6da04f,
  title = {Geologic map of the Central City West quadrangle, Muhlenberg and Ohio Counties, Kentucky},
  author = {James Edward Palmer},
  year = {1969},
  doi = {10.3133/gq831},
  url = {https://pubs.usgs.gov/publication/gq831},
  note = {Source identifier: gq831}
}