@misc{indiciae8582628aac3f,
  title = {Geologic map of the Schickard Quadrangle of the Moon},
  author = {T. N. V. Karlstrom},
  year = {1974},
  doi = {10.3133/i823},
  url = {https://pubs.usgs.gov/publication/i823},
  note = {Source identifier: i823}
}