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Slow sand filter

165 bytes added, 00:09, 15 May 2012

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[[Image:slow sand filter.jpg|thumb|right|300px|EELRCA water project: slow sand filter. Photo: [http://www.travelblog.org/Photos/2411254 Travelblog.org]]]

Yakbe, CAR

[[Image:Jal-TARA filter.jpg|thumb|right|300px| Jal-TARA filter]]

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