@misc{indiciae4ad5ff1c90b6,
  title = {Chlorinated hydrocarbons and eggshell changes in raptorial and fish-eating birds},
  author = {J.J. Hickey and D. W. Anderson},
  year = {1968},
  doi = {10.1126/science.162.3850.271},
  url = {https://pubs.usgs.gov/publication/5221271},
  note = {Source identifier: 5221271}
}