@misc{indiciaea9fc9e8c44b1,
  title = {Preliminary geologic map, part of the Littrow region of the Moon},
  author = {Baerbel Koesters Lucchitta},
  year = {1972},
  doi = {10.3133/ofr72236},
  url = {https://pubs.usgs.gov/publication/ofr72236},
  note = {Source identifier: ofr72236}
}