Yeshimebet Chanyalew Getahun และ Wiriya Loongyai. (2013) Distribution of campylobacter species in sheep of different production area at Debre Birhan, North-Shoa, Ethiopia. Kasetsart University:ม.ป.ท.Yeshimebet Chanyalew Getahun และ Wiriya Loongyai. 2013. Distribution of campylobacter species in sheep of different production area at Debre Birhan, North-Shoa, Ethiopia. ม.ป.ท.:Kasetsart University;Yeshimebet Chanyalew Getahun และ Wiriya Loongyai. Distribution of campylobacter species in sheep of different production area at Debre Birhan, North-Shoa, Ethiopia. ม.ป.ท.:Kasetsart University, 2013. Print.