Estimating profit efficiency of local beef traders in Tamale, Ghana: a stochastic frontier model approach. Ghana Journal of Science, Technology and Development, [S. l.], v. 10, n. 2, p. 84–99, 2025. DOI: 10.47881/456.967x. Disponível em: https://www.gjstd.org/index.php/GJSTD/article/view/456. Acesso em: 10 sep. 2025.