@misc{indiciaee0ba578a3af3,
  title = {Environmental effects of historical mining in the Animas River watershed, southwestern Colorado},
  author = {Stan E. Church},
  year = {2007},
  doi = {10.3133/fs20073051},
  url = {https://pubs.usgs.gov/publication/fs20073051},
  note = {Source identifier: fs20073051}
}