D.A. Cass

A regional acidic cloud/fog water event in the eastern United States
Weathers, Kathleen C., Gene E. Likens, F.H. Bormann, J.S. Eaton, W.B. Bowden, J. Andersen, D.A. Cass, et al. 1986. “A Regional Acidic Cloud Fog Water Event in the Eastern United States”. Nature 319: 657-58.