@misc{indiciae95fccfa3ce49,
  title = {A generalized geologic map of Mars.},
  author = {Carr, M. H. and Masursky, H. and Saunders, R. S.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730052399},
  note = {Source identifier: 19730052399}
}