@misc{indiciae603e69bdc161,
  title = {Mars maps},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1973},
  doi = {10.3133/ofr73346},
  url = {https://pubs.usgs.gov/publication/ofr73346},
  note = {Source identifier: ofr73346}
}