KAWAI, R. Population density of Japan by land form division. ERDKUNDE, [S. l.], v. 15, n. 3, p. 226–232, 1961. DOI: 10.3112/erdkunde.1961.03.07. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/1354. Acesso em: 30 apr. 2025.