@misc{indiciae5e45ab859adc,
  title = {Shaded relief and surface markings of Mercury},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1987},
  doi = {10.3133/i1822},
  url = {https://pubs.usgs.gov/publication/i1822},
  note = {Source identifier: i1822}
}