@misc{indiciae77def0f64465,
  title = {Eggshell thickness in mallards fed methylmercury},
  author = {G. H. Heinz},
  year = {1980},
  doi = {10.1007/bf01985561},
  url = {https://pubs.usgs.gov/publication/5221595},
  note = {Source identifier: 5221595}
}