HEAD, Irving. What Are Our Roots? 1980 Distinguished Lecture, American Association of Teacher Educators in Agriculture. Journal of Agricultural Education, [S. l.], v. 22, n. 1, p. 2–8, 1981. DOI: 10.5032/jaatea.1981.01002. Disponível em: https://jae-online.org/index.php/jae/article/view/972. Acesso em: 2 jul. 2026.