1. Inst. of Int. Agric., Michigan State Univ. East Lansing MI 48824
2. College of Agric. & Natural Resources Michigan State Univ.
3. Dep. of Crop & Soil Sci. Michigan State Univ.
4. Kellogg Biological Station Land and Water Program 3700 E. Gull Lake Dr. Hickory Corners MI 49060
5. Dep. of Horticulture Michigan State Univ.