, Birbal. The Ripening of Cones of Pinus Longifolia. Indian Forester, [S. l.], v. 30, n. 7, p. 309–311, 1904. DOI: 10.36808/if/1904/v30i7/16391. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/16391. Acesso em: 4 dec. 2025.