@misc{indiciae72486a0f3e58,
  title = {Relative toxicity of lead and five proposed substitute shot types to pen-reared mallards},
  author = {John W. Grandy and Louis N. Locke and George E. Bagley},
  year = {1968},
  doi = {10.2307/3798926},
  url = {https://pubs.usgs.gov/publication/5221272},
  note = {Source identifier: 5221272}
}