FREUND, B. Zur Agrarlandschaftsentwicklung in Transguadianaland (Portugal). ERDKUNDE, [S. l.], v. 26, n. 4, p. 252–266, 1972. DOI: 10.3112/erdkunde.1972.04.02. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/1673. Acesso em: 12 dec. 2024.