Profit Efficiency of Smallholder Soybean Farmers in Tolon District of Northern Region of Ghana. Ghana Journal of Science, Technology and Development, [S. l.], v. 7, n. 2, p. 29–43, 2021. DOI: 10.47881/258.967x. Disponível em: https://gjstd.org/index.php/GJSTD/article/view/258. Acesso em: 23 sep. 2025.