@misc{indiciae2726c8342617,
  title = {Water records of Puerto Rico, 1964-67, vol. 1},
  author = {J.G. Rickher},
  year = {1970},
  doi = {10.3133/ofr71239},
  url = {https://pubs.usgs.gov/publication/ofr71239},
  note = {Source identifier: ofr71239}
}