@misc{indiciaee861b7d3e21d,
  title = {Preliminary geologic map of the Warrick quadrangle, Bearpaw Mountains, Montana},
  author = {W. T. Pecora},
  year = {1957},
  doi = {10.3133/i237},
  url = {https://pubs.usgs.gov/publication/i237},
  note = {Source identifier: i237}
}