TEMESGEN , A. Assessment of Managerial Efficiency and Effectiveness of Multipurpose Primary Agricultural Cooperatives in East Wollega Zone, Ethiopia. Journal of Science, Technology and Arts Research, [S. l.], v. 4, n. 4, p. 215–220, 2015. DOI: 10.4314/star.v4i4.26. Disponível em: https://journals.wgu.edu.et/index.php/star/article/view/310. Acesso em: 23 sep. 2024.