m (Standardizing link sections)
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== External 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
* [http://www.allfilters.com/waterfilter Water Filter FAQs]
** Easy to Use
** Self contained Maintenance
** For Everybody
** No Following Costs
** Reliable


[[Category:Water_treatment]]  
[[Category:Water_treatment]]  
[[Category:Filters]]
[[Category:Filters]]

Revision as of 04:49, 10 August 2010

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