@misc{indiciaeb115a213a059,
  title = {Geology of the Bonner quadrangle, Montana},
  author = {Willis H. Nelson and Joseph P. Dobell},
  year = {1961},
  doi = {10.3133/b1111f},
  url = {https://pubs.usgs.gov/publication/b1111F},
  note = {Source identifier: b1111F}
}