@misc{indiciaefbf29083f3af,
  title = {Trends in precipitation chemistry across the U.S. 1985–2017: Quantifying the benefits from 30 years of Clean Air Act amendment regulation},
  author = {Michael McHale and Amy Ludtke and Gregory A. Wetherbee and Douglas A. Burns and Mark A. Nilles and Jason S. Finkelstein},
  year = {2021},
  doi = {10.1016/j.atmosenv.2021.118219},
  url = {https://pubs.usgs.gov/publication/70218015},
  note = {Source identifier: 70218015}
}