@misc{indiciae4646118d5b25,
  title = {Assessment of the petroleum, coal, and geothermal resources of the Economic Community of West African States (ECOWAS) region},
  author = {R. E. Mattick},
  year = {1982},
  doi = {10.3133/ofr82714},
  url = {https://pubs.usgs.gov/publication/ofr82714},
  note = {Source identifier: ofr82714}
}