BEKELE, W. Seasonal and Spatial Variation in Selected Mineral Concentrations of Dairy Cows in the Rift Valley of Ethiopia: A Case Study of Bishoftu and Wonji Shewa. Ethiopian Journal of Environment and Development, [S. l.], v. 8, n. 1, p. 16–29, 2026. DOI: 10.20372/ejed.v08i1.02. Disponível em: https://journal.du.edu.et/index.php/ejed/article/view/622. Acesso em: 10 nov. 2026.