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==Links==
== External links ==
* [http://www.raintree-foundation.org/AT/Appropirate_Technologies/Bio_Sand_Filter.html Biosand Filter]
* [http://www.raintree-foundation.org/AT/Appropirate_Technologies/Bio_Sand_Filter.html Biosand Filter]
** Clean Drinking Water
** Clean Drinking Water

Revision as of 04:28, 11 April 2010


External links

  • Biosand Filter
    • Clean Drinking Water
    • Easy to Use
    • Self contained Maintenance
    • For Everybody
    • No Following Costs
    • Reliable
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