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Filters: Keyword is hand pumps and Author is Rooy, C. de  [Clear All Filters]
Wurzel, P. y Rooy, C. de, «Boreholes versus handpumps : addressing a mis-match», Waterfront, pp. p. 6-7, 20-21: photogr., 1993.
Rooy, C. de y Donaldson, L.A., «Integrated water and sanitation development : the Nigerian experience», Water quality bulletin, pp. p. 36-42: fig., tab., 1990.
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