@misc{indiciae5a86c7b60151,
  title = {Economic geology of the Isla de Mona Quadrangle, Puerto Rico},
  author = {Reginald Peter Briggs},
  year = {1974},
  doi = {10.3133/ofr74226},
  url = {https://pubs.usgs.gov/publication/ofr74226},
  note = {Source identifier: ofr74226}
}