@misc{indiciaea8fe862a9277,
  title = {U.S. Geological Survey ground-water studies in Puerto Rico},
  author = {J.W. Troester},
  year = {1988},
  doi = {10.3133/ofr88162},
  url = {https://pubs.usgs.gov/publication/ofr88162},
  note = {Source identifier: ofr88162}
}