| http://www.w3.org/ns/prov#value | - More than a third of Africa's one billion inhabitants currently live in urban areas, which are dominated by informal settlements that lack basic services such as water supply, sanitation and waste removal.In Zambia, the development of a condominial sewer network together with innovative sanitation marketing approaches are being tried on a pilot basis to provide affordable sanitation to 45,000 resi
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