@misc{indiciaea0c20d5a038a,
  title = {Summary petroleum and selected mineral statistics for 120 countries, including offshore areas},
  author = {John Patrick Albers and M.D. Carter and A. L. Clark and A. B. Coury and S. P. Schweinfurth},
  year = {1973},
  doi = {10.3133/pp817},
  url = {https://pubs.usgs.gov/publication/pp817},
  note = {Source identifier: pp817}
}