KHALID, A.-M.; AYAMGA, M.; DANS-ABBEAM, G. ASSESSING THE PRODUCTIVE EFFICIENCY AMONG SMALLHOLDER COWPEA FARMERS IN NORTHERN GHANA. UDS International Journal of Development, [S. l.], v. 6, n. 1, p. 44–61, 2019. DOI: 10.47740/340.UDSIJD6i. Disponível em: https://udsijd.org/index.php/udsijd/article/view/340. Acesso em: 19 apr. 2024.