@misc{indiciaea9c43c3126f1,
  title = {Ground-water levels and chloride concentrations in alluvial aquifers on the south coast of Puerto Rico, February 1980},
  author = {Hector Colon-Ramos and Eloy Colon-Dieppa},
  year = {1981},
  doi = {10.3133/ofr81626},
  url = {https://pubs.usgs.gov/publication/ofr81626},
  note = {Source identifier: ofr81626}
}