@misc{indiciae154ae5b2473b,
  title = {Geological setting of oil shales in the Permian phosphoria formation and some of the geochemistry of these rocks},
  author = {E. K. Maughan},
  year = {1983},
  url = {https://pubs.usgs.gov/publication/70011102},
  note = {Source identifier: 70011102}
}