@misc{indiciae0a1a89381845,
  title = {Aerial gamma-ray survey in the northern part of the Boulder Batholith, Jefferson County, Montana},
  author = {Joseph S. Duval and James A. Pitkin and David L. Macke},
  year = {1978},
  doi = {10.3133/ofr78180},
  url = {https://pubs.usgs.gov/publication/ofr78180},
  note = {Source identifier: ofr78180}
}