This is the first version of the movies and pictures I took on how to build and install a biosand filter
Since 2007, Tom and Beverly Westheimer have been going to Chiang Mai, Thailand for four months to escape NH winter. We met and lived in BKK in the 70s for 10 years. We volunteer with http://www.KidsArkFoundation.org, enjoy Thai smiles, warm weather and best of all ... Thai food.
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