@misc{indiciae93606be52d0a,
  title = {Surficial geologic map of the Playa de Ponce and Santa Isabel quadrangles, Puerto Rico},
  author = {Lynn Glover and M. H. Pease and Theodore Arnow},
  year = {1977},
  doi = {10.3133/mf886},
  url = {https://pubs.usgs.gov/publication/mf886},
  note = {Source identifier: mf886}
}