@misc{indiciaeec5b0e9b1560,
  title = {A tabulation of lead isotopic ratios for lead minerals from mines and prospects in the Belt-Purcell Basin in the United States and Canada},
  author = {R. F. Marvin and R. E. Zartman},
  year = {1984},
  doi = {10.3133/ofr84210},
  url = {https://pubs.usgs.gov/publication/ofr84210},
  note = {Source identifier: ofr84210}
}