CHAMPION, F. W. Air Surveys of Forests. Indian Forester, [S. l.], v. 59, n. 1, p. 13–21, 1932. DOI: 10.36808/if/1933/v59i1/20251. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/20251. Acesso em: 21 aug. 2025.