@misc{indiciae5dc001314660,
  title = {Effects of lead-contaminated sediment on Rana sphenocephala tadpoles},
  author = {D. W. Sparling and S.K. Krest and M. Ortiz-Santaliestra},
  year = {2006},
  url = {https://pubs.usgs.gov/publication/5224660},
  note = {Source identifier: 5224660}
}