@misc{indiciae1959b76331bb,
  title = {Geoelectrical studies of a trenched line across the Animas River, San Juan County, Colorado},
  author = {D. L. Campbell and J.C. Eckhart},
  year = {2000},
  doi = {10.3133/ofr00112},
  url = {https://pubs.usgs.gov/publication/ofr00112},
  note = {Source identifier: ofr00112}
}