@misc{indiciae80b0b765cb92,
  title = {Geology of the Venezuelan Guayana Shield and its relation to the entire Guayana Shield},
  author = {G.B. Sidder and Vicente Mendoza S.},
  year = {1991},
  doi = {10.3133/ofr91141},
  url = {https://pubs.usgs.gov/publication/ofr91141},
  note = {Source identifier: ofr91141}
}