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Vaish, D.P.

Vaish, D.P., 1996. Community ownership : key to effective maintenance,

Fecha publicación: 30/12/2004

Davis, C. & Vaish, D.P., 1993. Construction of handpump-equipped wells at high altitude : learning from non-governmental organizations. , pp.p. 10-11: 1 fig., photogr.

Fecha publicación: 30/12/2004

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