@misc{indiciaee05c8d2eb95a,
  title = {World petroleum assessment 2000; compiled PowerPoint slides},
  author = {Thomas S. Ahlbrandt},
  year = {2001},
  doi = {10.3133/ofr9950z},
  url = {https://pubs.usgs.gov/publication/ofr9950Z},
  note = {Source identifier: ofr9950Z}
}