@misc{indiciae2c1d39ea0781,
  title = {The Paleozoic and Mesozoic rocks; a discussion to accompany the geologic map of the United States},
  author = {Philip Burke King and Helen Marie Beikman},
  year = {1976},
  doi = {10.3133/pp903},
  url = {https://pubs.usgs.gov/publication/pp903},
  note = {Source identifier: pp903}
}