@misc{indiciae0bbe7f36f070,
  title = {Preliminary geologic map of the Memnonia quadrangle of Mars, Viking Mars 1975 landing site},
  author = {T.A. Mutch},
  year = {1973},
  doi = {10.3133/ofr73200},
  url = {https://pubs.usgs.gov/publication/ofr73200},
  note = {Source identifier: ofr73200}
}