@misc{indiciae22898b65d8ea,
  title = {Blood lead concentrations in mallards from Delevan and Colusa National Wildlife Refuges},
  author = {David M. Mauser and Tonie E. Rocke and John G. Mensik and Christopher J. Brand},
  year = {1990},
  url = {https://pubs.usgs.gov/publication/1004117},
  note = {Source identifier: 1004117}
}