WI, K. M. H. V. The Geographical Fulcrum of the 21st Century-Revisiting the Heartland Theory. The International Journal of Humanities & Social Studies, [S. l.], v. 6, n. 7, 2018. Disponível em: https://internationaljournalcorner.com/index.php/theijhss/article/view/131724. Acesso em: 5 nov. 2024.