@misc{indiciae90f3f5629039,
  title = {Mineral resources of the Holy Cross Wilderness Area, Eagle, Pitkin, and Lake counties, Colorado},
  author = {Alan R. Wallace and G. K. Lee and D. L. Campbell and William Lundby and S. Don Brown},
  year = {1989},
  doi = {10.3133/b1879},
  url = {https://pubs.usgs.gov/publication/b1879},
  note = {Source identifier: b1879}
}