@misc{indiciaeefb982bf68cd,
  title = {Potentiometric surface of the alluvial aquifer and hydrologic conditions in the Santa Isabel-Juana Diaz area, Puerto Rico, March to April, 1987},
  author = {Felix Rodriguez-del-Rio and Fernando Gómez-Gómez},
  year = {1990},
  doi = {10.3133/wri894116},
  url = {https://pubs.usgs.gov/publication/wri894116},
  note = {Source identifier: wri894116}
}