Aredo และ Tesfaye Alemu. (2006) Studies on the utilization of crop residues and the potential of urea treated maize stover for cattle performances in East Shoa Zone, Ethiopia /. Kasetsart University,:ม.ป.ท.Aredo และ Tesfaye Alemu. 2006. Studies on the utilization of crop residues and the potential of urea treated maize stover for cattle performances in East Shoa Zone, Ethiopia /. ม.ป.ท.:Kasetsart University,;Aredo และ Tesfaye Alemu. Studies on the utilization of crop residues and the potential of urea treated maize stover for cattle performances in East Shoa Zone, Ethiopia /. ม.ป.ท.:Kasetsart University, 2006. Print.