@misc{indiciae6619398a89c7,
  title = {Determination of pre-mining geochemical conditions and paleoecology in the Animas River Watershed, Colorado},
  author = {S. E. Church and D.L. Fey and E. M. Brouwers and C. W. Holmes and Robert Blair},
  year = {1999},
  doi = {10.3133/ofr9938},
  url = {https://pubs.usgs.gov/publication/ofr9938},
  note = {Source identifier: ofr9938}
}