Value chain Analysis of Coffee (coffee Arabica): the case of Arsi zone, Oromiya National Regional State of Ethiopia . Arsi Journal of Science and Innovation , [S. l.], v. 4, n. 1, 2024. DOI: 10.20372/wwja-ys39. Disponível em: https://journals.arsiun.edu.et/index.php/AJSI/article/view/43.. Acesso em: 5 feb. 2025.