@misc{indiciae65419182f383,
  title = {Organic petrology of Paleocene Marcelina Formation coals, Paso Diablo mine, western Venezuela: Tectonic controls on coal type},
  author = {P.C. Hackley and M. Martinez},
  year = {2007},
  doi = {10.1016/j.coal.2006.05.002},
  url = {https://pubs.usgs.gov/publication/70031199},
  note = {Source identifier: 70031199}
}