@misc{indiciaea3faccca4a54,
  title = {Behavior of mallard ducklings from parents fed 3 ppm DDE},
  author = {G. H. Heinz},
  year = {1976},
  doi = {10.1007/bf01685179},
  url = {https://pubs.usgs.gov/publication/5221375},
  note = {Source identifier: 5221375}
}