@misc{indiciaeed15c066448f,
  title = {Applicability of ambient toxicity testing to national or regional water-quality assessment},
  author = {John F. Elder},
  year = {1990},
  doi = {10.3133/cir1049},
  url = {https://pubs.usgs.gov/publication/cir1049},
  note = {Source identifier: cir1049}
}