@misc{indiciae46c4a94e6a3b,
  title = {Principal facts for gravity stations in and near the Madison and Gallatin Divide Roadless Areas, Montana},
  author = {J. H. Hassemer and H. E. Kaufmann},
  year = {1984},
  doi = {10.3133/ofr84847},
  url = {https://pubs.usgs.gov/publication/ofr84847},
  note = {Source identifier: ofr84847}
}