@misc{indiciae1b55b1f26591,
  title = {Shaded relief and surface markings maps of the polar regions of Ganymede},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1992},
  doi = {10.3133/i2331},
  url = {https://pubs.usgs.gov/publication/i2331},
  note = {Source identifier: i2331}
}