Biblio

WHO. Regional Office for Africa -Harare, ZW, WHO / AFRO, «Operation and maintenance activities in Africa : consolidated report». World Health Organization Regional Office for Africa, Harare, Zimbabwe, p. 38 p. : 6 boxes, 3 tab., 1998.

WHO. Regional Office for Africa -Harare, ZW, WHO / AFRO, «[Papers presented at the workshop on operation and maintenance of rural and urban water supply and sanitation systems, Harare, 8 - 12 November, 1993]». World Health Organization Regional Office for Africa, Brazzaville, Congo, p. 11 papers: fig., maps, tab., 1993.

WHO. Regional Office for Africa -Harare, ZW, WHO / AFRO, Oslo, N. O. N. O. R. A. D. -, y Government, Rand Urban, «Decade consultative meeting on water supply and sanitation 1981-90 : Harare, 26-30 November 1990 : proceedings and resolutions». Zimbabwe, Ministry of Local Government, Rural and Urban Development, Harare, Zimbabwe, p. ca. 170 p. : fig., map, tab., 1990.