BAKER, A. R. H. A note on the retrogressive and retrospective approaches in historical geography. ERDKUNDE, [S. l.], v. 22, n. 3, p. 244–245, 1968. DOI: 10.3112/erdkunde.1968.03.07. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/1564. Acesso em: 4 dec. 2024.