@misc{indiciae1e286840d937,
  title = {Preliminary map showing known and suspected active faults in western Montana},
  author = {Irving Jerome Witkind},
  year = {1975},
  doi = {10.3133/ofr75285},
  url = {https://pubs.usgs.gov/publication/ofr75285},
  note = {Source identifier: ofr75285}
}