@misc{indiciaeb8f15eab4fa0,
  title = {A Bibliography of the geology and mineral deposits for the Guayana Shield, Venezuela},
  author = {G.B. Sidder},
  year = {1987},
  doi = {10.3133/ofr88222},
  url = {https://pubs.usgs.gov/publication/ofr88222},
  note = {Source identifier: ofr88222}
}