@misc{indiciae35496faf1439,
  title = {Duplication of geologic formation names},
  author = {F.B. Weeks},
  year = {1899},
  doi = {10.1126/science.9.226.625-a},
  url = {https://pubs.usgs.gov/publication/70207971},
  note = {Source identifier: 70207971}
}