@misc{indiciaee6b352a82414,
  title = {Controlled photomosaic of the MTM 15132 Quadrangle, Olympus Mons region of Mars},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1991},
  doi = {10.3133/i2227},
  url = {https://pubs.usgs.gov/publication/i2227},
  note = {Source identifier: i2227}
}