@misc{indiciae2e9f4855b8bd,
  title = {Annotated bibliography of tectonostratigraphic and organic geochemical characteristics of upper Precambrian Rocks related to their petroleum potential},
  author = {G. F. Ulmishek},
  year = {1989},
  doi = {10.3133/ofr9063},
  url = {https://pubs.usgs.gov/publication/ofr9063},
  note = {Source identifier: ofr9063}
}