SULLIVAN, M. E.; HUGHES, P. J. Environmental planning and applied geography in Papua New Guinea. ERDKUNDE, [S. l.], v. 42, n. 2, p. 114–123, 1988. DOI: 10.3112/erdkunde.1988.02.03. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/2150. Acesso em: 30 jul. 2025.