@misc{indiciae5afa95d6d1bb,
  title = {Geologic map of the Sphinx Mountain Quadrangle and adjacent parts of the Cameron, Cliff Lake, and Hebgen Dam quadrangles, Montana},
  author = {R. G. Tysdal},
  year = {1990},
  doi = {10.3133/i1815},
  url = {https://pubs.usgs.gov/publication/i1815},
  note = {Source identifier: i1815}
}