@misc{indiciae3882462ad951,
  title = {Hydrogeochemical prospecting for porphyry copper deposits in the tropical-marine climate of Puerto Rico},
  author = {W. R. Miller and W. H. Ficklin and R. E. Learned},
  year = {1982},
  doi = {10.1016/0375-6742(82)90011-5},
  url = {https://pubs.usgs.gov/publication/70011860},
  note = {Source identifier: 70011860}
}