@misc{indiciae67e7ed8bc386,
  title = {Evaluations of duck habitat and estimation of duck population sizes with a remote-sensing-based system},
  author = {Lewis M. Cowardin and Terry L. Shaffer and Phillip M. Arnold},
  year = {1995},
  url = {https://pubs.usgs.gov/publication/bsr2},
  note = {Source identifier: bsr2}
}