@misc{indiciae8468056ef674,
  title = {Water resources of the Coamo area, Puerto Rico},
  author = {Ennio V. Giusti},
  year = {1971},
  doi = {10.3133/70271733},
  url = {https://pubs.usgs.gov/publication/70271733},
  note = {Source identifier: 70271733}
}