@misc{indiciaeba5c39c6173c,
  title = {Mineral occurrences of the Guiana Shield, Venezuela},
  author = {G.B. Sidder},
  year = {1990},
  doi = {10.3133/ofr9016},
  url = {https://pubs.usgs.gov/publication/ofr9016},
  note = {Source identifier: ofr9016}
}