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The aid hand-operated water pump : a classic example of technology transfer
Out of the mouths of babes : an honest evaluation of water and sanitation in Ecuador
Evaluation of the SEDRI/IEOS Rural Water and Sanitation Program in Ecuador
A workshop on handpump installation and maintenance in Riobamba, Ecuador : 17-27, 1983
USAID handpump program in Ecuador
Integrated rural health delivery system Ecuador : final evaluation
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tecnologías de agua
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