Amare, Yared; Adal, Yigremew; Tolossa, Degafa; Castro, Alfonso Peter; Little, Peter D.(BASIS Greater Horn of Africa Program and the Institute for Development Research, Addis Ababa University, Ethiopia, 2000)
Castro, Alfonso Peter; Amare, Yared; Adal, Yigremew; Tolossa, Degafa(BASIS Greater Horn of Africa Program and the Institute for Development Research, Addis Ababa University, Ethiopia, 1999)