@misc{indiciae4b1ff9e7f9da,
  title = {Geology and coal deposits of the Switz City quadrangle, Greene County, Indiana},
  author = {Frank Edward Kottlowski},
  year = {1960},
  doi = {10.3133/coal41},
  url = {https://pubs.usgs.gov/publication/coal41},
  note = {Source identifier: coal41}
}