@misc{indiciae671c84828b0e,
  title = {Geologic/geomorphic and structure maps of the northern quarter of Venus},
  author = {G. G. Schaber and R.C. Kozak},
  year = {1990},
  doi = {10.3133/ofr9024},
  url = {https://pubs.usgs.gov/publication/ofr9024},
  note = {Source identifier: ofr9024}
}