STEFFEN, Richard W.; WATSON, Dennis G.; HARRISON, Tony V. Teaching Beam Sizing Concepts Using the Experimental Process. Journal of Agricultural Systems, Technology, and Management, [S. l.], v. 18, n. 1, 2004. Disponível em: https://jastm.org/index.php/jastm/article/view/11779. Acesso em: 23 feb. 2025.