@misc{indiciae34ff0f625b88,
  title = {Geologic map of part of the Covington quadrangle, northern Kentucky},
  author = {Stanley J. Luft},
  year = {1971},
  doi = {10.3133/gq955},
  url = {https://pubs.usgs.gov/publication/gq955},
  note = {Source identifier: gq955}
}