@misc{indiciae68201d52978a,
  title = {The role of population monitoring in the management of North American waterfowl},
  author = {J.D. Nichols and B. Kenneth Williams and Fred A. Johnson},
  year = {2000},
  url = {https://pubs.usgs.gov/publication/5211280},
  note = {Source identifier: 5211280}
}