@misc{indiciae2ab87de175e8,
  title = {Geology of the Coamo area, Puerto Rico, and its relation to the volcanic arc-trench association},
  author = {Lynn Glover},
  year = {1971},
  doi = {10.3133/pp636},
  url = {https://pubs.usgs.gov/publication/pp636},
  note = {Source identifier: pp636}
}