@misc{indiciaeb760cf2b9be5,
  title = {Population ecology of the mallard: III. Bibliography of published research and management findings},
  author = {David R. Anderson and Patricia Ann Skaptason and Kathleen C. Fahey and Charles J. Henny},
  year = {1974},
  url = {https://pubs.usgs.gov/publication/rp119},
  note = {Source identifier: rp119}
}