@misc{indiciaef15e31ad05d4,
  title = {Eggshell thinning and contaminant levels in bald eagle eggs from Arizona, 1977 to 1985},
  author = {T.G. Grubb and Stanley N. Wiemeyer and L.F. Kiff},
  year = {1990},
  url = {https://pubs.usgs.gov/publication/5222235},
  note = {Source identifier: 5222235}
}