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Communauté rurale --- Rural communities --- Pays en développement --- Developing countries --- Approvisionnement en eau --- water supply --- Pompe --- Pumps --- Propriété technologique --- technical properties --- Efficacité --- Efficiency --- Hand pumps --- Water-supply, Rural --- Rural water-supply --- Sanitation, Rural --- Hand-operated pumps --- Handpumps --- Pumps, Hand --- Pumping machinery --- Testing
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Pompes à main --- Pompes à main --- Eau --- Essais. --- Approvisionnement rural
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Freedom of the press --- Freedom of speech --- Liberté de la presse --- Liberté d'expression --- Black, Hugo LaFayette,
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Methane --- Groundwater --- Water-supply --- Water quality --- Groundwater --- Methane --- Water quality. --- Water-supply. --- Environmental aspects --- Pollution --- Pollution. --- Environmental aspects. --- United States
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