@misc{indiciaedb3b90217821,
  title = {Geology of the western part of the Big Delta (D-6) quadrangle, Alaska},
  author = {John R. Williams},
  year = {1959},
  doi = {10.3133/i297},
  url = {https://pubs.usgs.gov/publication/i297},
  note = {Source identifier: i297}
}