@misc{indiciae0f763d691d4e,
  title = {Controlled photomosaic of the MTM 15127 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/i2228},
  url = {https://pubs.usgs.gov/publication/i2228},
  note = {Source identifier: i2228}
}