Biblio

K. E. U. N. E. P. - Nairobi y Water Research Commission -Pretoria, ZA, WRC, Freshwater under threat in Africa - vulnerability assessment of freshwater resources to environmental change. Nairobi, Kenya: UNEP, United Nations Environment Programme, 2009, p. xv, 319 p. : Boxes, fig., tab.

Water Research Commission -Pretoria, ZA, WRC, Water Research Commission : technical report 2000. Pretoria, South Africa: Water Research Commission, WRC, 2000, p. 160 p. : photogr.