@misc{indiciae17619f5fb1a5,
  title = {Compilation of water-quality data for the north coast limestone aquifers, Puerto Rico, 1951 to 1987},
  author = {Angel Roman-Mas and Orlando Ramos-Gines},
  year = {1988},
  doi = {10.3133/ofr87533},
  url = {https://pubs.usgs.gov/publication/ofr87533},
  note = {Source identifier: ofr87533}
}