@misc{indiciaef0c9f11bd84e,
  title = {Fixed-wing airplane versus helicopter surveys of manatees (Trichechus manatus)},
  author = {Galen B. Rathbun},
  year = {2006},
  doi = {10.1111/j.1748-7692.1988.tb00185.x},
  url = {https://pubs.usgs.gov/publication/1007841},
  note = {Source identifier: 1007841}
}