Koni และ Nega Tolla. (2006) Productive and reproductive responses of lactating dairy cows of different feeding managements in Oromia, Ethiopia /. Kasetsart University,:ม.ป.ท.Koni และ Nega Tolla. 2006. Productive and reproductive responses of lactating dairy cows of different feeding managements in Oromia, Ethiopia /. ม.ป.ท.:Kasetsart University,;Koni และ Nega Tolla. Productive and reproductive responses of lactating dairy cows of different feeding managements in Oromia, Ethiopia /. ม.ป.ท.:Kasetsart University, 2006. Print.