SPEECE, M. Duality of market structures in nineteenth and early twentieth century Oman. ERDKUNDE, [S. l.], v. 41, n. 3, p. 196–210, 1987. DOI: 10.3112/erdkunde.1987.03.03. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2130. Acesso em: 8 oct. 2024.