CLEPPER, Henry. Society of American Foresters has Fiftieth Birthday. Indian Forester, [S. l.], v. 78, n. 2, p. 100–102, 1952. DOI: 10.36808/if/1952/v78i2/23360. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/23360. Acesso em: 21 aug. 2025.