@misc{indiciae6c0412fd03e0,
  title = {Canvasback mortality from illegal hunting on the upper Mississippi River},
  author = {Carl E. Korschgen and Kevin P. Kenow and James M. Nissen and John F. Wetzel},
  year = {1996},
  url = {https://pubs.usgs.gov/publication/1002903},
  note = {Source identifier: 1002903}
}