WEBB, Earl S. Improving Graduate Programs. Journal of Agricultural Education, [S. l.], v. 9, n. 2, p. 4–6, 1968. DOI: 10.5032/jaatea.1968.02004. Disponível em: https://jae-online.org/index.php/jae/article/view/681. Acesso em: 6 aug. 2026.