@misc{indiciaec5867915e9cd,
  title = {Organochlorine residues and shell thickness in eggs of the clapper rail, common gallinule, purple gallinule, and limpkin (Class Aves), eastern and southern United States, 1972-74},
  author = {Erwin E. Klaas and H. M. Ohlendorf and E. Cromartie},
  year = {1980},
  url = {https://pubs.usgs.gov/publication/5221586},
  note = {Source identifier: 5221586}
}