@misc{indiciae99855337916a,
  title = {Geologic map of the Mare Acidalium Quadrangle (including the potential Viking landing site Cydonia)},
  author = {J.R. Underwood and N.J. Trask},
  year = {1978},
  doi = {10.3133/i1048},
  url = {https://pubs.usgs.gov/publication/i1048},
  note = {Source identifier: i1048}
}