@misc{indiciaebcd786685815,
  title = {Explanatory text to accompany the Geologic map of the United States},
  author = {Philip B. King and Helen M. Beikman},
  year = {1974},
  doi = {10.3133/pp901},
  url = {https://pubs.usgs.gov/publication/pp901},
  note = {Source identifier: pp901}
}