@misc{indiciae605b3bf93f3d,
  title = {Geologic map of the Hevelius region of the moon},
  author = {J.F. McCauley},
  year = {1967},
  doi = {10.3133/i491},
  url = {https://pubs.usgs.gov/publication/i491},
  note = {Source identifier: i491}
}