@misc{indiciaefab527fe5671,
  title = {Geologic and hydrologic data collected at test holes NC-6 and NC-11, Hatillo and Isabela, northwestern Puerto Rico},
  author = {Jesús Rodríguez-Martínez and John L. Hartley},
  year = {1994},
  doi = {10.3133/ofr93465},
  url = {https://pubs.usgs.gov/publication/ofr93465},
  note = {Source identifier: ofr93465}
}