@misc{indiciae0120abbe135b,
  title = {Episodic acidification is not responsible for amphibian declines in the Rocky Mountains, USA},
  author = {F. A. Vertucci and P. S. Corn},
  year = {1993},
  url = {https://pubs.usgs.gov/publication/70128527},
  note = {Source identifier: 70128527}
}