@misc{indiciaeb7942be19d43,
  title = {Geology and petroleum resources of central and east-central Africa},
  author = {J.A. Peterson},
  year = {1985},
  doi = {10.3133/ofr85589},
  url = {https://pubs.usgs.gov/publication/ofr85589},
  note = {Source identifier: ofr85589}
}