MACKIE, George A . Tractors Vs. Horses in the Woods. Indian Forester, [S. l.], v. 49, n. 10, p. 569–570, 1923. DOI: 10.36808/if/1923/v49i10/18636. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/18636. Acesso em: 21 aug. 2025.