@misc{indiciae88cb1b7790ca,
  title = {Geologic map of the Lewiston area, Fergus County, Montana},
  author = {L.S. Gardener},
  year = {1959},
  doi = {10.3133/om199},
  url = {https://pubs.usgs.gov/publication/om199},
  note = {Source identifier: om199}
}