@misc{indiciaeec3762d380f7,
  title = {Geologic map and cross section of the Wallrock quadrangle, Gallatin and Park Counties, Montana},
  author = {Betty Skipp},
  year = {1977},
  doi = {10.3133/gq1402},
  url = {https://pubs.usgs.gov/publication/gq1402},
  note = {Source identifier: gq1402}
}