DERSO, Tesfamichael Fentie. An assessment of road and bridge construction in Simen and Begemider province, 1963-1991. Ethiopian Journal of Social Sciences (EJSS), [S. l.], v. 9, n. 2, p. 111–132, 2023. Disponível em: https://journals.bdu.edu.et/index.php/ejss/article/view/1735. Acesso em: 26 aug. 2026.