@misc{indiciae409c4020d1a6,
  title = {U-Th-Pb systematics of Apollo 12 lunar samples},
  author = {Doe, B. R. and Knight, R. J. and Tatsumoto, M.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710063016},
  note = {Source identifier: 19710063016}
}