@misc{indiciaec0050aa94386,
  title = {Comparative dietary toxicities of pesticides to birds},
  author = {Robert G. Heath and James W. Spann and Elwood F. Hill and James F. Kreitzer},
  year = {1972},
  url = {https://pubs.usgs.gov/publication/ssrw152},
  note = {Source identifier: ssrw152}
}