@misc{indiciaec31ea381d422,
  title = {Geologic map of the Fracastorius Quadrangle of the Moon},
  author = {D.E. Stuart-Alexander and R. W. Tabor},
  year = {1972},
  doi = {10.3133/i720},
  url = {https://pubs.usgs.gov/publication/i720},
  note = {Source identifier: i720}
}