@misc{indiciae38ef9c9a3a45,
  title = {Preliminary pictorial map of (Jupiter) Europa},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1979},
  doi = {10.3133/i1241},
  url = {https://pubs.usgs.gov/publication/i1241},
  note = {Source identifier: i1241}
}