@misc{indiciaed19659ec12c4,
  title = {(ORB II-2(25)) Geologic map of Apollo landing site 1, part of Maskelyne DA region southeastern Mare Tranquillitatis},
  author = {D.E. Wilhelms},
  year = {1970},
  doi = {10.3133/i617},
  url = {https://pubs.usgs.gov/publication/i617},
  note = {Source identifier: i617}
}