Sources of Propagating Wood for Pear Varieties and Species in the United States and Canada. Journal of the American Pomological Society, [S. l.], v. 11, n. 1, p. 6–15, 1956. DOI: 10.71318/apom.1956.11.1.6. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/166. Acesso em: 10 feb. 2026.