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Raintree Foundation
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Action Against Hunger USA
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BioSand filter Obeyeye Ghana
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Biosand filter-pilot project Guatemala 2009.
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The Clean Water Song
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bio sand water filter
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Clean Water For Haiti 2010 Campaign
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World Water Day || 66 seconds || Turn on the Tap
SamaritansPurseANZ
Thank you video '09
DRmissionteam
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St. Theresia's welcome song for Thirst Relief/LWDG-C
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C.S. Mbvah visit
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BSF Mold Fabrication (part 2)
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Biosand Filter Production Center - Pure Water for the World Haiti
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Biosand Filter Sand Washing - Pure Water for the World - Haiti
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Sieve Swing Sand - Pure Water for the World Haiti
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Sieve Swing Gravel - Pure Water for the World Haiti
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Biosand filter construction CWH.MOV
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Zambia BSF Factory Sand Sorters
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2012 Reed Elsevier Environmental Prize Update
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2016 12 07 21 01 The Sand in the Biosand Getting to the Heart of the Filter
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Song of Healthy Homes in Zambia
