@misc{indiciaed8980c8d5934,
  title = {Geologic map and structure sections along part of the lower Yukon River, Alaska},
  author = {W. W. Patton and R.S. Bickel},
  year = {1956},
  doi = {10.3133/i197},
  url = {https://pubs.usgs.gov/publication/i197},
  note = {Source identifier: i197}
}