WALKER, H. C. Scientific Forestry. Indian Forester, [S. l.], v. 33, n. 10, p. 453–456, 1907. DOI: 10.36808/if/1907/v33i10/16947. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/16947. Acesso em: 4 dec. 2025.