@misc{indiciaec6bd8c6de2f2,
  title = {Geologic reconnaissance in the Yukon-Kuskokwim delta region, Alaska},
  author = {W. L. Coonrad},
  year = {1957},
  doi = {10.3133/i223},
  url = {https://pubs.usgs.gov/publication/i223},
  note = {Source identifier: i223}
}