@misc{indiciae18d1224fc1e8,
  title = {Distribution in states and counties of waterfowl species harvested during 1961-70 hunting seasons},
  author = {S.M. Carney and M.F. Sorensen and E.M. Martin},
  year = {1975},
  url = {https://pubs.usgs.gov/publication/5230117},
  note = {Source identifier: 5230117}
}