@misc{indiciaeebef4f8833fb,
  title = {Shaded relief map of the Margaritifer Sinus Quadrangle of Mars},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1980},
  doi = {10.3133/i1293},
  url = {https://pubs.usgs.gov/publication/i1293},
  note = {Source identifier: i1293}
}