@misc{indiciae36ef8aa4b9c0,
  title = {Trial monitoring of pesticides in wings of mallards and black ducks},
  author = {R.G. Heath and R. M. Prouty},
  year = {1967},
  doi = {10.1007/bf01684150},
  url = {https://pubs.usgs.gov/publication/5221280},
  note = {Source identifier: 5221280}
}