@misc{indiciae20ed4fc3fa47,
  title = {Controlled photomosaic of part of the Planum Australe region of Mars},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1987},
  doi = {10.3133/i1889},
  url = {https://pubs.usgs.gov/publication/i1889},
  note = {Source identifier: i1889}
}