@misc{indiciaec8b4e427ee1d,
  title = {Estimating ground-water influx to a portion of the Rio Grande de Manati River basin in Puerto Rico through the measurement of 222Rn},
  author = {K. Kelly Ellins and Angel Roman-Mas and Roger W. Lee},
  year = {1986},
  url = {https://pubs.usgs.gov/publication/70171280},
  note = {Source identifier: 70171280}
}