The USDA Pear Breeding Program II. Seedling Evaluation. Journal of the American Pomological Society, [S. l.], v. 33, n. 2, p. 57–65, 1979. DOI: 10.71318/apom.1979.33.2.57. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1386. Acesso em: 31 jan. 2026.