@misc{indiciae391375eb4795,
  title = {Reconnaissance geologic map of the Nabesna B-3 Quadrangle, Alaska},
  author = {D.H. Richter},
  year = {1975},
  doi = {10.3133/i904},
  url = {https://pubs.usgs.gov/publication/i904},
  note = {Source identifier: i904}
}