J. De la Harpe and Vermeulen, A.,
“Alfred Nzo DM's community-based approach”, in
Towards the millennium development goals - actions for water and environmental sanitation : proceedings of the 29th WEDC conference, Abuja, Nigeria, 2003, Loughborough, UK, 2003, pp. p. 305-308.
P. K. W. De Silva,
“CBO Federation for the sustainabality of rural water supply”, in
Towards the millennium development goals - actions for water and environmental sanitation : proceedings of the 29th WEDC conference, Abuja, Nigeria, 2003, Loughborough, UK, 2003, pp. p. 235-237 : 2 tabs.