@misc{indiciae9077e178b8df,
  title = {Map showing appraisal of mineral resource potential of RARE II proposed roadless areas in National forests, Montana (exclusive of coal, oil, gas, and construction materials)},
  author = {Melville Rhodes Mudge and R.L. Earhart},
  year = {1978},
  doi = {10.3133/ofr78972},
  url = {https://pubs.usgs.gov/publication/ofr78972},
  note = {Source identifier: ofr78972}
}