@misc{indiciae8d56e84a63b6,
  title = {Assessment of conventionally recoverable petroleum resources of Venezuela},
  author = {Charles D. Masters},
  year = {1981},
  doi = {10.3133/ofr811146},
  url = {https://pubs.usgs.gov/publication/ofr811146},
  note = {Source identifier: ofr811146}
}