@misc{indiciae923df5c5857f,
  title = {Assessment of conventionally recoverable petroleum resources of Trinidad},
  author = {Charles D. Masters},
  year = {1981},
  doi = {10.3133/ofr811145},
  url = {https://pubs.usgs.gov/publication/ofr811145},
  note = {Source identifier: ofr811145}
}