VELÁSQUEZ R., J. C.; RIVERA T., J. F. Design, Construction and Evaluation of a Naked Seed Planter for the Cultivation of Tobacco. Ingeniería y Región, [S. l.], v. 7, p. 85–92, 2010. DOI: 10.25054/22161325.803. Disponível em: https://journalusco.edu.co/index.php/iregion/article/view/803. Acesso em: 19 may. 2024.