@misc{indiciae2b0dd428cd09,
  title = {Geologic map of the Kirksville quadrangle, Garrard and Madison Counties, Kentucky},
  author = {Robert C. Greene},
  year = {1965},
  doi = {10.3133/gq452},
  url = {https://pubs.usgs.gov/publication/gq452},
  note = {Source identifier: gq452}
}