@misc{indiciae4a9bfc5897ea,
  title = {Reconnaissance geologic map and section of the Nabesna B-4 Quadrangle, Alaska},
  author = {D.H. Richter},
  year = {1971},
  doi = {10.3133/i656},
  url = {https://pubs.usgs.gov/publication/i656},
  note = {Source identifier: i656}
}