Biosand Filters 2012

A Cheap, Reliable Way To Filter Water, Proven Around The World

  1. Asia-Off-Grid

    Asia-Off-Grid RIP 11-8-2018

    Asia-Off-Grid submitted a new resource:

    Biosand Filters - A Cheap, Reliable Way To Filter Water, Proven Around The World

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    Tempstar and duane like this.
  2. ladrillero

    ladrillero Monkey

    Thank you for sharing.
     
    Asia-Off-Grid likes this.
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