@misc{indiciae58db87edd076,
  title = {Geology and coal resources of the coal-bearing rocks of Alabama},
  author = {W.C. Culbertson},
  year = {1964},
  doi = {10.3133/b1182b},
  url = {https://pubs.usgs.gov/publication/b1182B},
  note = {Source identifier: b1182B}
}