@misc{indiciae6791680b27f6,
  title = {Episodic acidification and changes in fish diversity in Pennsylvania headwater streams},
  author = {R.M. Heard and W.E. Sharpe and R.F. Carline and William G. Kimmel},
  year = {1997},
  doi = {10.1577/1548-8659(1997)126<0977:eaacif>2.3.co;2},
  url = {https://pubs.usgs.gov/publication/70019558},
  note = {Source identifier: 70019558}
}