@misc{indiciae90de03781733,
  title = {Phosphatic Permian rocks of the Adobe Range, Nevada, and their environment of deposition},
  author = {Keith Brindley Ketner},
  year = {1979},
  doi = {10.3133/ofr79239},
  url = {https://pubs.usgs.gov/publication/ofr79239},
  note = {Source identifier: ofr79239}
}