@misc{indiciaeb58942cce265,
  title = {Bentonite deposit, Aguada, Barrio Malpaso, Puerto Rico},
  author = {Raymond James Smith and R.B. Guillou},
  year = {1953},
  doi = {10.3133/ofr53249},
  url = {https://pubs.usgs.gov/publication/ofr53249},
  note = {Source identifier: ofr53249}
}