1. Daniel B. Warnell School of Forestry and Natural ResourcesUniversity of Georgia 180 E Green Street Athens GA 30602 USA
2. Savannah River Ecology Laboratory, University of Georgia, Drawer EAiken SC 29802 USA
3. Weyerhaeuser Company P.O. Box 2288 Columbus MS 39704 USA
4. National Council for Air and Stream Improvement, Inc. P.O. Box 340317 Clemson SC 29634‐0317 USA