@misc{indiciae79cf3f04fc48,
  title = {Trends in wintering canvasback populations at Catahoula Lake, Louisiana},
  author = {Dennis W. Woolington and James W. Emfinger},
  year = {1989},
  url = {https://pubs.usgs.gov/publication/70202812},
  note = {Source identifier: 70202812}
}