@misc{indiciae4139b07b236b,
  title = {Geologic map of the Maud quadrangle, Nelson and Washington Counties, Kentucky},
  author = {Warren Lee Peterson},
  year = {1972},
  doi = {10.3133/gq1043},
  url = {https://pubs.usgs.gov/publication/gq1043},
  note = {Source identifier: gq1043}
}