@misc{indiciaee50f2df774fd,
  title = {Data used to prepare a map showing the location of significant gold mines in Montana},
  author = {David Frishman and J. E. Elliott and E.E. Foord and Robert C. Pearson and W. H. Raymond},
  year = {1990},
  doi = {10.3133/ofr90242b},
  url = {https://pubs.usgs.gov/publication/ofr90242B},
  note = {Source identifier: ofr90242B}
}