@misc{indiciae1fc49de049d6,
  title = {Geologic map of the Colombo Quadrangle of the Moon},
  author = {D. P. Elston},
  year = {1972},
  doi = {10.3133/i714},
  url = {https://pubs.usgs.gov/publication/i714},
  note = {Source identifier: i714}
}