| http://www.w3.org/ns/prov#value | - It has become overwhelmingly clear from both research and field observations (Warford and Saunders, 1976; Elmendorf, 1978; Burton, 1979) that the main obstacle in the use and maintenance of improved water and sanitation systems is not the quality of technology, but the failure ???in qualified human resources and in management and organization techniques, including a failure to capture community in
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