@misc{indiciae0db525303dbd,
  title = {General surface- and ground-water quality in a coal-resource area near Durango, southwestern Colorado},
  author = {D. L. Butler},
  year = {1986},
  doi = {10.3133/wri864073},
  url = {https://pubs.usgs.gov/publication/wri864073},
  note = {Source identifier: wri864073}
}