BUILA, Theodore. The Task of Quantifying Agricultural Occupations. Journal of Agricultural Education, [S. l.], v. 10, n. 1, p. 22–26, 1969. DOI: 10.5032/jaatea.1969.01022. Disponível em: https://jae-online.org/index.php/jae/article/view/1517. Acesso em: 11 aug. 2024.