@misc{indiciae154774517ada,
  title = {Topographic map of the Iapygia Northeast Quadrangle (MC-21 NE) of Mars},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1991},
  doi = {10.3133/i2102},
  url = {https://pubs.usgs.gov/publication/i2102},
  note = {Source identifier: i2102}
}