Acid rain, 1977-1985

(4312) Acid rain experiment meeting, November 29, 1977; (5219B) Acid rain, copy, March 24, 1980; (5364BC) Combustion of fossil fuels, acid rain, copy, October 30, 1980; (6037) Julius Chang, Director, Eulerian Regional Acid Deposition Model, backed by the Environmental Protection Agency [EPA], informal portrait of Chang in his office, July 22, 1983; (6435C) Dead trout for the Annual Report, December 7, 1984; (6585) Transfer of acid rain sampler from Queen Air to Department of Energy [DOE] aircraft DC-3, July 22, 1985.