@misc{indiciae0e9fb345db4b,
  title = {Geology and coal deposits of the Jasonville quadrangle, Clay, Greene and Sullivan Counties, Indiana},
  author = {Charles Eugene Wier},
  year = {1950},
  doi = {10.3133/coal1},
  url = {https://pubs.usgs.gov/publication/coal1},
  note = {Source identifier: coal1}
}