@misc{indiciae68dc859c7815,
  title = {Geologic map of the Wichmann CA region of the Moon, Lunar Orbiter Site III P-11, Oceanus Procellarum including Apollo landing sites 4 and 4R},
  author = {David Cummings},
  year = {1971},
  doi = {10.3133/i624},
  url = {https://pubs.usgs.gov/publication/i624},
  note = {Source identifier: i624}
}