@misc{indiciae64c7d791bfac,
  title = {Water resources data for Puerto Rico, water year 1977. Surface and quality-of-water records and ground water records},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1980},
  doi = {10.3133/wdrpr771},
  url = {https://pubs.usgs.gov/publication/wdrPR771},
  note = {Source identifier: wdrPR771}
}