@misc{indiciae23a2ad08c61f,
  title = {Ground-Water Quality in the Caguas-Juncos Valley, Puerto Rico, April to October 1990},
  author = {Jose M. Rodriguez and Juan C. Puig},
  year = {1996},
  doi = {10.3133/ofr96139},
  url = {https://pubs.usgs.gov/publication/ofr96139},
  note = {Source identifier: ofr96139}
}