@misc{indiciae352b60f40cfb,
  title = {Improving waterfowl production estimates: Results of a test in the prairie pothole region},
  author = {P.M. Arnold and L.M. Cowardin},
  year = {1985},
  url = {https://pubs.usgs.gov/publication/1001851},
  note = {Source identifier: 1001851}
}