@misc{indiciae572958396a2e,
  title = {Mineral resource assessment of the Republic of Costa Rica},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1987},
  doi = {10.3133/i1865},
  url = {https://pubs.usgs.gov/publication/i1865},
  note = {Source identifier: i1865}
}