TOLLA, T. T. Visually Impaired Children in some sites of Ethiopia: Review on Prevalence, Causes and Problems. Bahir Dar Journal of Education, [S. l.], v. 16, n. 1, 2016. Disponível em: http://journals.bdu.edu.et/index.php/bje/article/view/21. Acesso em: 1 feb. 2026.