1. Hydraulic Engineer, U.S. Army Corps of Engineers, P.O. Box 2004, Rock Island, IL 61204.(formerly, Graduate Student, Michigan Technological Univ.)
2. Associate Professor, Dept. of Civil and Environmental Engineering, Michigan Technological Univ., 1400 Townsend Dr., Houghton, MI 49931.
3. Associate Professor, Dept. of Environmental Science and Studies, Juniata College, 1700 Moore St., Juniata, PA 16652.