JOHNSON, Donald M.; FLETCHER, William E. Safety Pratices and Equipment Used in Mississippi Agricultural Mechanics Laboratories. Journal of Agricultural Systems, Technology, and Management, [S. l.], v. 6, n. 1, p. 12–17, 1990. Disponível em: https://ticket17180.pkpmisc01.publicknowledgeproject.org/index.php/jastm/article/view/11941. Acesso em: 25 aug. 2026.