@misc{indiciae1114edc54391,
  title = {Geology and mineral resource assessment of the Venezuelan Guayana Shield},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey and Corporacion Venezolana de Guayana.},
  year = {1993},
  doi = {10.3133/b2062},
  url = {https://pubs.usgs.gov/publication/b2062},
  note = {Source identifier: b2062}
}