@misc{indiciaeb6350b94ad9c,
  title = {Geologic map of the Isla de Mona Quadrangle, Puerto Rico},
  author = {V.M. Seiders},
  year = {1972},
  doi = {10.3133/i718},
  url = {https://pubs.usgs.gov/publication/i718},
  note = {Source identifier: i718}
}