@misc{indiciae778dce1f3ca1,
  title = {Summary of the water resources of Puerto Rico},
  author = {H.J. McCoy},
  year = {1978},
  doi = {10.3133/ofr78971},
  url = {https://pubs.usgs.gov/publication/ofr78971},
  note = {Source identifier: ofr78971}
}