@misc{indiciae6dcd604c8214,
  title = {Trends in precipitation chemistry in the United States, 1983-94; an analysis of the effects of Phase I of the Clean Air Act Amendments of 1990, Title IV},
  author = {J.A. Lynch and V.C. Bowersox and J.W. Grimm},
  year = {1996},
  doi = {10.3133/ofr96346},
  url = {https://pubs.usgs.gov/publication/ofr96346},
  note = {Source identifier: ofr96346}
}