HELLEN, J. A. A Note on Development of the Kafue Flats in Northern Rhodesia with Particular Reference to Polder Methods in Agriculture. ERDKUNDE, [S. l.], v. 18, n. 2, p. 149–156, 1964. DOI: 10.3112/erdkunde.1964.02.14. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/1441. Acesso em: 30 apr. 2025.