@misc{indiciae26bc9ceac536,
  title = {Waterfowl production in relation to grazing},
  author = {L.M. Kirsch},
  year = {1969},
  doi = {10.2307/3799313},
  url = {https://pubs.usgs.gov/publication/1001690},
  note = {Source identifier: 1001690}
}