METCALFE, Darrell S. And Revolutionary We Must Be. Journal of Agricultural Education, [S. l.], v. 8, n. 2, p. 5–9, 1967. DOI: 10.5032/jaatea.1967.02005. Disponível em: https://jae-online.org/index.php/jae/article/view/1121. Acesso em: 9 aug. 2024.