@misc{indiciae5836c73119c8,
  title = {Causes of acidification of four streams on Laurel Hilld in southwestern Pennsylvania},
  author = {William E. Sharpe and David R. DeWalle and Robert T. Leibfried and Richard S. Dinicola and William G. Kimmel and Lysle S. Sherwin},
  year = {1984},
  doi = {10.2134/jeq1984.00472425001300040022x},
  url = {https://pubs.usgs.gov/publication/70171419},
  note = {Source identifier: 70171419}
}