@misc{indiciae7b98312d3f96,
  title = {Topographic map of the Tharsis Northwest Quadrangle of Mars},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1986},
  doi = {10.3133/i1684},
  url = {https://pubs.usgs.gov/publication/i1684},
  note = {Source identifier: i1684}
}