@misc{indiciae580c0c10a0e0,
  title = {Water resources of the Maunabo Valley, Puerto Rico},
  author = {D. G. Adolphson and M.A. Seijo and Tully M. Robison},
  year = {1977},
  doi = {10.3133/wri76115},
  url = {https://pubs.usgs.gov/publication/wri76115},
  note = {Source identifier: wri76115}
}