1. Dep. of Horticulture and Natural Resources; Kansas State Univ.
2. Green Section Research, United States Golf Association; Dallas TX 75201
3. Dep. of Plant Sciences; North Dakota State Univ.; Fargo ND 58108
4. Dep. of Plant Pathology; Kansas State Univ.; Manhattan KS 66506
5. Dep. of Horticulture; Univ. of Wisconsin
6. The Herbert College of Agriculture; Univ. of Tennessee; Knoxville TN 37996
7. Dep. of Horticulture; Iowa State Univ.
8. Monsanto Company; Huxley IA 50124
9. Dep. of Horticulture; Iowa State Univ.; Ames IA 50011
10. Dep. of Horticulture and Natural Resources; Kansas State Univ.; Olathe KS 66061
11. Dep. of Horticulture and Landscape Architecture; Oklahoma State Univ. Stillwater OK 74078
12. Dep. of Plant Pathology; Kansas State Univ.
13. NDSU Plant Diagnostic Lab; North Dakota State Univ.; Fargo ND 58108
14. Chicago District Golf Association
15. BASF; Cerro Gordo IL 61818
16. J. R. Simplot; Atlanta GA
17. Dep. of Soil Science; Univ. of Wisconsin-Madison; Madison WI 53706