1. Wolaita Sodo Univ. P.O. Box 138 Sodo Ethiopia
2. Mekedela Amba Univ. PO Box 999 Tuluawliya Ethiopia
3. International Livestock Research Institute P O Box 5689 Addis Ababa Ethiopia
4. Univ. of Edinburgh Edinburgh UK
5. International Center for Tropical Agriculture P. O. Box Nairobi Kenya