@misc{indiciaef954a7ffc7ba,
  title = {Shaded relief map of the Phoenicus Lacus Quadrangle of Mars},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1975},
  doi = {10.3133/i924},
  url = {https://pubs.usgs.gov/publication/i924},
  note = {Source identifier: i924}
}