@misc{indiciae222eb0e4560e,
  title = {Preliminary geologic map of the near side of the Moon},
  author = {Don E. Wilhelms and John F. McCauley},
  year = {1969},
  doi = {10.3133/ofr69319},
  url = {https://pubs.usgs.gov/publication/ofr69319},
  note = {Source identifier: ofr69319}
}