@misc{indiciae765105e99893,
  title = {Element distribution in some Paleozoic black shales and associated rocks},
  author = {James David Vine},
  year = {1969},
  doi = {10.3133/b1214g},
  url = {https://pubs.usgs.gov/publication/b1214G},
  note = {Source identifier: b1214G}
}