RAMANN, E. The Evolution and Classification of Soils. Indian Forester, [S. l.], v. 55, n. 8, p. 453–454, 1929. DOI: 10.36808/if/1929/v55i8/19772. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/19772. Acesso em: 4 dec. 2025.