1. Texas A&M AgriLife Extension Service; Dep. of Soil and Crop Sciences, 370 Olsen Blvd., 2474 TAMUS; Texas A&M Univ.; College Station TX 77843
2. Food and Resource Economics Dep., 1097 McCarty Hall B, P.O. Box 110240 IFAS; Univ. of Florida; Gainesville FL 32611-0240
3. Biosystems and Agricultural Engineering Dep., 218 Agriculture Hall; Oklahoma State Univ.; Stillwater OK 74078-6021
4. Carl Vinson Institute of Government, 201 N. Milledge Ave.; Univ. of Georgia; Athens GA 30602
5. College of Environment and Design, 152 Jackson Street Building, 285 South Jackson St.; Univ. of Georgia; Athens GA 30602
6. School of Forest Resources and Conservation; Food and Resource Economics Dep., P.O. Box 110410 IFAS; Univ. of Florida; Gainesville FL 32611-0410
7. College of Engineering; Driftmier Engineering Center, 597 DW Brooks Dr.; Univ. of Georgia; Athens GA 30602
8. Environmental Science Program, P.O. Box 442339; Univ. of Idaho; Moscow ID 83844-2339