@misc{indiciae032a34354d4b,
  title = {Concentrated nesting of mallards and gadwalls on Miller Lake Island, North Dakota},
  author = {Harold F. Duebbert and John T. Lokemoen and David E. Sharp},
  year = {1983},
  doi = {10.2307/3808608},
  url = {https://pubs.usgs.gov/publication/1001481},
  note = {Source identifier: 1001481}
}