RYKER, Harrison C. Aerial Photography- Method of Determining Timber Species. Indian Forester, [S. l.], v. 59, n. 8, p. 520–521, 1933. DOI: 10.36808/if/1933/v59i8/20408. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/20408. Acesso em: 21 aug. 2025.