@misc{indiciaefdfd8541aeb9,
  title = {Water resources data for Puerto Rico, Water Year 1978},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1981},
  doi = {10.3133/wdrpr781},
  url = {https://pubs.usgs.gov/publication/wdrPR781},
  note = {Source identifier: wdrPR781}
}