@misc{indiciaeb64040ffea17,
  title = {Gneissic amphibolite at Las Palmas, Puerto Rico, and its significance in the early history of the greater antilles island arc},
  author = {O. T. Tobisch},
  year = {1968},
  doi = {10.1130/0016-7606(1968)79[557:gaalpp]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70221426},
  note = {Source identifier: 70221426}
}