@misc{indiciaec86f2ff1565f,
  title = {Temporal trends in the acidity of precipitation and surface waters of New York},
  author = {Norman E. Peters and Roy A. Schroeder and David E. Troutman},
  year = {1982},
  doi = {10.3133/wsp2188},
  url = {https://pubs.usgs.gov/publication/wsp2188},
  note = {Source identifier: wsp2188}
}