@misc{indiciae46ecf3868efb,
  title = {Petrology and depositional facies of siliciclastic rocks of the Middle Ordovician Simpson Group, Mazur Well, southeastern Anadarko Basin, Oklahoma},
  author = {Romeo M. Flores and C. William Keighin},
  year = {1989},
  doi = {10.3133/b1866e},
  url = {https://pubs.usgs.gov/publication/b1866E},
  note = {Source identifier: b1866E}
}