@misc{indiciaea42a104ce8f8,
  title = {Coal resources of Arkansas, 1954},
  author = {Boyd Raymond Haley},
  year = {1960},
  doi = {10.3133/b1072p},
  url = {https://pubs.usgs.gov/publication/b1072P},
  note = {Source identifier: b1072P}
}