@misc{indiciaee0106b5060eb,
  title = {The subsurface stratigraphy and structure of the Simpson area},
  author = {Thomas G. Roberts and Florence Robinson},
  year = {1950},
  doi = {10.3133/70210462},
  url = {https://pubs.usgs.gov/publication/70210462},
  note = {Source identifier: 70210462}
}