@misc{indiciaefe7280fc9900,
  title = {U.S. Geological Survey programs in Puerto Rico},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1996},
  doi = {10.3133/fs05196},
  url = {https://pubs.usgs.gov/publication/fs05196},
  note = {Source identifier: fs05196}
}