Punched Cards as Aids in Evaluating Seedlings in the Field. Journal of the American Pomological Society, [S. l.], v. 15, n. 3, p. 47–50, 1961. DOI: 10.71318/apom.1961.15.3.47. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/439. Acesso em: 19 feb. 2026.