LICHT, Melea A. R.; MARTIN, Robert A. Agricultural Issues Of Significance To Iowa Crop Producers And Their Educational Implications. Journal of Agricultural Education, [S. l.], v. 48, n. 3, p. 57–66, 2007. DOI: 10.5032/jae.2007.03057. Disponível em: https://jae-online.org/index.php/jae/article/view/2037. Acesso em: 13 jul. 2024.