@misc{indiciae4e438cd34c1d,
  title = {Preliminary map showing surficial deposits in the Woodworth Quadrangle, Missoula and Powell counties, Montana},
  author = {Irving Jerome Witkind},
  year = {1977},
  doi = {10.3133/ofr77203},
  url = {https://pubs.usgs.gov/publication/ofr77203},
  note = {Source identifier: ofr77203}
}