HAWLEY, Ralph C.; JESUP, Morris K. Practice of Silviculture. Indian Forester, [S. l.], v. 62, n. 8, p. 520–521, 1936. DOI: 10.36808/if/1936/v62i8/21025. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/21025. Acesso em: 5 dec. 2025.