@misc{indiciae908ef036e0df,
  title = {Preliminary bedrock geologic map of the Nabesna quadrangle, Alaska},
  author = {D.H. Richter},
  year = {1973},
  doi = {10.3133/ofr73232},
  url = {https://pubs.usgs.gov/publication/ofr73232},
  note = {Source identifier: ofr73232}
}