1. University of North Texas, P.O. Box 310559, Denton, Texas 76203-0559
2. Institute of Applied Science, University of North Texas, P.O. Box 310559, Denton, Texas 76203-0559
3. Department of Chemistry, University of North Texas, P.O. Box 305070, Denton, Texas 76203-5070
4. Department of Geography, University of North Texas, P.O. Box 305279, Denton, Texas 76203-5279
5. Department of Biology, Baylor University, 1311 S 5th Street, Waco, Texas 76798-0003