@misc{indiciaee79bdc2ebc35,
  title = {Coal geology of the U.S. gulf coastal region},
  author = {Peter D. Warwick and Claire E. Aubourg and S.S. Crowley and S.M. Nichols and Steven M. Podwysocki and John R. SanFilipo and R. E. Thomas and C.J. Watt and Jason C. Willett},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/70195480},
  note = {Source identifier: 70195480}
}