Existing urban water systems are at the end of their design lifetimes. New, innovative solutions are needed, and these must combine technology and engineering with an understanding of social systems and institutions.
Fuente : http://www.eurekalert.org/pub_releases/2013-08/mal...
Fuente : http://www.eurekalert.org/pub_releases/2013-08/mal...



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La prevención del VIH no llega a las jóvenes sudafricanas

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