@misc{indiciaee4cd81e3821a,
  title = {Geologic map of the Michelangelo Quadrangle of Mercury},
  author = {P. D. Spudis and J.G. Prosser},
  year = {1984},
  doi = {10.3133/i1659},
  url = {https://pubs.usgs.gov/publication/i1659},
  note = {Source identifier: i1659}
}