Full Length Research Paper
Authors
Seyoum Gebrekidan
FARM Africa, Bale Eco-Region, Bale, Ethiopia.
Lemma Tiki
College of Agriculture and Veterinary Science, Ambo University, P. O. Box 19, Ambo, Ethiopia.
Yigardu Mulatu
Ethiopian Environment and Forestry Research Institute, Addis Ababa, Ethiopia.
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