@misc{indiciae67cb89c28c76,
  title = {Ranking of the world's oil and gas provinces by known petroleum volumes},
  author = {T. R. Klett and Thomas S. Ahlbrandt and J. W. Schmoker and G.L. Dolton},
  year = {1997},
  doi = {10.3133/ofr97463},
  url = {https://pubs.usgs.gov/publication/ofr97463},
  note = {Source identifier: ofr97463}
}