@misc{indiciae74a08da4754a,
  title = {Organic petrology and coalbed gas content, Wilcox Group (Paleocene-Eocene), northern Louisiana},
  author = {Paul C. Hackley and Peter D. Warwick and F. Clayton Breland},
  year = {2007},
  doi = {10.1016/j.coal.2006.05.009},
  url = {https://pubs.usgs.gov/publication/70029969},
  note = {Source identifier: 70029969}
}