https://www.du.edu.et/journals/ethiopian-journal-of-environment-and-development-ejed/2026-11-10T19:52:56+00:00https://www.du.edu.et/journals/dilla-journal-of-education-dje/2026-11-10T19:54:28+00:00https://www.du.edu.et/journals/the-african-journal-of-health-sciences-and-medicine-ajhsm/2026-11-10T19:54:39+00:00