@misc{indiciaeef55940e5e50,
  title = {Petrography, geochemistry, and depositional setting of the San Pedro and Santo Tomas coal zones: Anomalous algae-rich coals in the middle part of the Claiborne Group (Eocene) of Webb County, Texas},
  author = {Peter D. Warwick and Robert W. Hook},
  year = {1995},
  doi = {10.1016/0166-5162(95)00022-4},
  url = {https://pubs.usgs.gov/publication/70018728},
  note = {Source identifier: 70018728}
}