@misc{indiciae917134d40335,
  title = {Trace elements in canvasbacks ( Aythya valisineria ) wintering in Louisiana, USA, 1987-1988},
  author = {Thomas W. Custer and William L. Hohman},
  year = {1994},
  doi = {10.1016/0269-7491(94)90136-8},
  url = {https://pubs.usgs.gov/publication/1002506},
  note = {Source identifier: 1002506}
}