@misc{indiciaec6146ec79c84,
  title = {Nationwide residues of organochlorines in wings of adult mallards and black ducks, 1972-73},
  author = {Donald H. White and R.G. Heath},
  year = {1976},
  url = {https://pubs.usgs.gov/publication/5221359},
  note = {Source identifier: 5221359}
}