@misc{indiciae274a4e6ccd47,
  title = {Geologic map of the Sixteen NE quadrangle, Meagher, Gallatin, and Park Counties, Montana},
  author = {Laura W. McGrew},
  year = {1977},
  doi = {10.3133/gq1384},
  url = {https://pubs.usgs.gov/publication/gq1384},
  note = {Source identifier: gq1384}
}