@misc{indiciae539c70250db9,
  title = {Reconnaissance geologic map of the Nabesna A-4 Quadrangle, Alaska},
  author = {D.H. Richter},
  year = {1973},
  doi = {10.3133/i789},
  url = {https://pubs.usgs.gov/publication/i789},
  note = {Source identifier: i789}
}