@misc{indiciaef15e304199d9,
  title = {The determination of lead in 13 USGS standard rocks},
  author = {P. J. Aruscavage and E.Y. Campbell},
  year = {1979},
  doi = {10.1016/0039-9140(79)80018-1},
  url = {https://pubs.usgs.gov/publication/70010344},
  note = {Source identifier: 70010344}
}