1. 208 Carrier Hall, Dep. of Civil Engineering, Univ. of Mississippi University MS 38677-1848
2. Bayer CropScience; 17745 S. Metcalf Stilwell KS 66085
3. Dep. of Biological & Agricultural Engineering; Texas A&M University; College Station TX 77843-2117
4. USDA-ARS; Kika de la Garza, Subtropical Agricultural Research Unit; 2413E Hwy 83 Weslaco TX 78596