@misc{indiciaecac4424810a1,
  title = {Mineral resources of the Sheep Mountain Wilderness Study Area, Baker County, Oregon},
  author = {Roger P. Ashley and Robert C. Roback and Robert L. Turner and Robert C. Jachens and Terry J. Close},
  year = {1988},
  doi = {10.3133/b1741b},
  url = {https://pubs.usgs.gov/publication/b1741B},
  note = {Source identifier: b1741B}
}