@misc{indiciaeb6687896e51c,
  title = {Coal Underlying Federal Lands in the Gulf of Mexico Coastal Plain},
  author = {Alex W. Karlsen and John R. SanFilipo and Peter D. Warwick},
  year = {2002},
  doi = {10.3133/fs09402},
  url = {https://pubs.usgs.gov/publication/fs09402},
  note = {Source identifier: fs09402}
}