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Concrete Biosand Filter

6 bytes added, 01:49, 18 January 2013

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[[Image:Biosandfilter.png‎|right|100px]]

[[Image:concrete biosand filter.jpg|thumb|right|300px| Bio Sand Filter in Kumbo, Cameroon. Photo: [http://www.lwdgc-africa.org/15.html LWDG Cameroon.]]]

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