@misc{indiciaedd0216c12d3b,
  title = {Tundra swan research needs on the Upper Mississippi River},
  author = {K.P. Kenow and J.M. Nissen and R. Drieslein and E.M. Thorson},
  year = {2004},
  url = {https://pubs.usgs.gov/publication/85639},
  note = {Source identifier: 85639}
}