Nutrient Level and Seed Number in ‘Magness’ Pears as Related to Fruitfulness. Journal of the American Pomological Society, [S. l.], v. 31, n. 1, p. 4–6, 1977. DOI: 10.71318/apom.1977.31.1.4. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1325. Acesso em: 13 dec. 2025.