@misc{indiciaea16cab8ba8bc,
  title = {Geochemical data from the West Needle and West Needle Contiguous Wilderness Study Areas, San Juan and La Plata counties, Colorado},
  author = {S.D. Birmingham and R. E. Van Loenen},
  year = {1983},
  doi = {10.3133/ofr83814},
  url = {https://pubs.usgs.gov/publication/ofr83814},
  note = {Source identifier: ofr83814}
}