@misc{indiciaeae517026704f,
  title = {Precambrian geology of the United States; an explanatory text to accompany the geologic map of the United States},
  author = {Philip Burke King},
  year = {1976},
  doi = {10.3133/pp902},
  url = {https://pubs.usgs.gov/publication/pp902},
  note = {Source identifier: pp902}
}