@misc{indiciae531b6a59bcf9,
  title = {Geology of central Costa Rica and its implications in the geologic history of the region},
  author = {Richard D. Krushensky and Enrique V. Malavassi and Rolando M. Castillo},
  year = {1976},
  url = {https://pubs.usgs.gov/publication/70232219},
  note = {Source identifier: 70232219}
}