TY  - RPRT
TI  - 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
AU  - J.A. Lynch
AU  - V.C. Bowersox
AU  - J.W. Grimm
PY  - 1996
DO  - 10.3133/ofr96346
UR  - https://pubs.usgs.gov/publication/ofr96346
ID  - ofr96346
ER  -