@misc{indiciae69f5dd0728fd,
  title = {Environmental pollutants and eggshell thickness: Anhingas and wading birds in the eastern United States},
  author = {Harry M. Ohlendorf and Erwin E. Klaas and T. Earl Kaiser},
  year = {1979},
  url = {https://pubs.usgs.gov/publication/ssrw216},
  note = {Source identifier: ssrw216}
}