Hasholt, B. “Developments in River Basin Management: Proceedings of an LAWPRC Conference Held in Sao Paulo, Brazil, 13-15 August 1986. Eds. N.L.R. Nucci, K. Vehara and W.S. Casadei. (Water Science and Technology, Vol. 19 (1987) No. 9.)”. Geografisk Tidsskrift - Danish Journal of Geography, vol. 89, Jan. 1989, https://tidsskrift.dk/geografisktidsskrift/article/view/44669.