@misc{indiciae153e0670dc28,
  title = {Selected annotated bibliography of minor-element content of marine black shales and related sedimentary rocks, 1930-65},
  author = {Elizabeth B. Tourtelot},
  year = {1970},
  doi = {10.3133/b1293},
  url = {https://pubs.usgs.gov/publication/b1293},
  note = {Source identifier: b1293}
}