@misc{indiciae26321d23f3d1,
  title = {Geologic map of the Oppolzer A region of the Moon Lunar Orbiter Site II P-8, Sinus Medii including Apollo landing sites 3 and 3R},
  author = {L. C. Rowan},
  year = {1971},
  doi = {10.3133/i620},
  url = {https://pubs.usgs.gov/publication/i620},
  note = {Source identifier: i620}
}