Abtew A, Hadera A, Sishagn S. The British Sudan and western frontiers of Ethiopia: Encroachment on and cooperation in Benishangul, 1898-1908. EJSS [Internet]. 2024Jun.29 [cited 2025Sep.5];10(1):110-27. Available from: http://journals.bdu.edu.et/index.php/ejss/article/view/1801