@misc{indiciae692b23e8749e,
  title = {Geology and coal deposits of the Linton quadrangle, Greene and Sullivan Counties, Indiana},
  author = {Charles Eugene Wier},
  year = {1951},
  doi = {10.3133/coal9},
  url = {https://pubs.usgs.gov/publication/coal9},
  note = {Source identifier: coal9}
}