@misc{indiciaeb479630eb81c,
  title = {Geology and coal deposits of the Seelyville quadrangle, Vigo County, Indiana},
  author = {Harold C. Hutchison},
  year = {1958},
  doi = {10.3133/coal27},
  url = {https://pubs.usgs.gov/publication/coal27},
  note = {Source identifier: coal27}
}