@misc{indiciae7440a8c9751e,
  title = {Tertiary coals in South Texas: Anomalous cannel-like coals of Webb County (Claiborne Group, Eocene) and lignites of Atascosa County (Jackson Group, Eocene) - Geologic setting, character, source-rock and coal-bed methane potential},
  year = {1999},
  doi = {10.3133/ofr99301},
  url = {https://pubs.usgs.gov/publication/ofr99301},
  note = {Source identifier: ofr99301}
}