@misc{indiciae984ef911068c,
  title = {South Louisiana crude oil and DDE in the diet of mallard hens: Effects on reproduction and duckling survival},
  author = {L.D. Vangilder and T.J. Peterle},
  year = {1980},
  doi = {10.1007/bf01985480},
  url = {https://pubs.usgs.gov/publication/5222597},
  note = {Source identifier: 5222597}
}