@misc{indiciae1a5fdc50958c,
  title = {The Cenozoic rocks; a discussion to accompany the geologic map of the United States},
  author = {Philip Burke King and Helen M. Beikman},
  year = {1978},
  doi = {10.3133/pp904},
  url = {https://pubs.usgs.gov/publication/pp904},
  note = {Source identifier: pp904}
}