ASTHANA, M. N. Terrain Classification in Logging. Indian Forester, [S. l.], v. 90, n. 11, p. 733–736, 1964. DOI: 10.36808/if/1964/v90i11/25040. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/25040. Acesso em: 21 aug. 2025.