@misc{indiciae7e9a6bc76388,
  title = {Lead isotope variation with growth zoning in a galena crystal},
  author = {R.S. Cannon and A.P. Pierce and M.H. Delevaux},
  year = {1963},
  doi = {10.1126/science.142.3592.574},
  url = {https://pubs.usgs.gov/publication/70010838},
  note = {Source identifier: 70010838}
}