@misc{indiciaefaefe1cb699e,
  title = {Geologic map of the Caguas Quadrangle, Puerto Rico},
  author = {C.L. Rogers},
  year = {1979},
  doi = {10.3133/i1152},
  url = {https://pubs.usgs.gov/publication/i1152},
  note = {Source identifier: i1152}
}