@misc{indiciae7c49376d033e,
  title = {Preliminary report on the geology of the Coamo quadrangle, Puerto Rico},
  author = {Lynn Glover},
  year = {1961},
  doi = {10.3133/i335},
  url = {https://pubs.usgs.gov/publication/i335},
  note = {Source identifier: i335}
}