@misc{indiciaefd9064cc2af4,
  title = {Geologic map of the Iapygia Quadrangle of Mars},
  author = {G. G. Schaber},
  year = {1977},
  doi = {10.3133/i1020},
  url = {https://pubs.usgs.gov/publication/i1020},
  note = {Source identifier: i1020}
}