Spruce Yarn. Indian Forester, [S. l.], v. 38, n. 3, p. 142–142, 1912. DOI: 10.36808/if/1912/v38i3/17493. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/17493. Acesso em: 20 feb. 2026.