@misc{indiciaedf4b9054501f,
  title = {South Louisiana crude oil of DDE in the diet of mallard hens: Effects on egg quality},
  author = {L.D. Vangilder and T.J. Peterle},
  year = {1981},
  doi = {10.1007/bf01622098},
  url = {https://pubs.usgs.gov/publication/5221641},
  note = {Source identifier: 5221641}
}