@misc{indiciaebbfd812f7528,
  title = {Mineral resources of the Beaver Creek Wilderness Study Area, Fremont, El Paso, and Teller counties, Colorado},
  author = {David A. Lindsey and J.R. Hassemer and R.A. Martin and R. B. Taylor and T. J. Kreidler},
  year = {1986},
  doi = {10.3133/b1716b},
  url = {https://pubs.usgs.gov/publication/b1716B},
  note = {Source identifier: b1716B}
}