@misc{indiciaead82e574e101,
  title = {Preliminary map showing surficial deposits in the east half of the Peck Lake Quadrangle, Missoula and Lake counties, Montana},
  author = {Irving Jerome Witkind},
  year = {1977},
  doi = {10.3133/ofr77539},
  url = {https://pubs.usgs.gov/publication/ofr77539},
  note = {Source identifier: ofr77539}
}