Trends in precipitation chemistry in the United States, 1983-94 [electronic resource] : an analysis of the effects in 1995 of Phase I of the Clean Air Act Amendments of 1990, Title IV / [by James A. Lynch, Van C. Bowersox, and Jeffrey W. Grimm, principal investigators].
Imprint
College Station, Pa. : U.S. Dept. of the Interior ; Denver, CO : Information Services [distributor], 1996.