@misc{indiciaee0ee51e1ae42,
  title = {U.S. Geological Survey Assessment 2000: Estimates of undiscovered oil and gas resources for the world},
  author = {Thomas S. Ahlbrandt and G. Whitney},
  year = {2000},
  url = {https://pubs.usgs.gov/publication/70022585},
  note = {Source identifier: 70022585}
}