@misc{indiciae6afa13539bd7,
  title = {A revised bibliography of the geology and mineral deposits of the Guayana Shield in Venezuela, Brazil, Guyana, Suriname, French Guiana, and Colombia},
  author = {G.B. Sidder},
  year = {1989},
  doi = {10.3133/ofr89564},
  url = {https://pubs.usgs.gov/publication/ofr89564},
  note = {Source identifier: ofr89564}
}