@misc{indiciaefb4760071b95,
  title = {Toxicity to amphibians of environmental extracts from natural waters in National Parks and Fish and Wildlife Refuges},
  author = {Christine M. Bridges and Edward E. Little},
  year = {2005},
  url = {https://pubs.usgs.gov/publication/70175743},
  note = {Source identifier: 70175743}
}