@misc{indiciaef46519e9b65d,
  title = {Preliminary map of plutonic units of the Boulder batholith, southwestern Montana},
  author = {Harry Wynn Smedes and Montis Ruhl Klepper and Robert I. Tilling},
  year = {1988},
  doi = {10.3133/ofr88283},
  url = {https://pubs.usgs.gov/publication/ofr88283},
  note = {Source identifier: ofr88283}
}