1. Dep. of Biological and Agricultural Engineering; Kansas State Univ.; Manhattan KS 66506
2. USDA-ARS, National Lab. for Agriculture and the Environment; Ames IA 50011
3. USDA-ARS, Environmental Management and Byproduct Utilization Lab.; Beltsville MD 20705
4. Bureau of Air, Kansas Dep. of Health and Environment; Topeka KS 66612