@misc{indiciaec6f2fb36929f,
  title = {Rocks and mineral resources of the Wolf Creek area, Lewis and Clark and Cascade counties, Montana},
  author = {Robert George Schmidt},
  year = {1978},
  doi = {10.3133/b1441},
  url = {https://pubs.usgs.gov/publication/b1441},
  note = {Source identifier: b1441}
}