Document
Transcripts for '9. How to do a Swirl and Dump - Biosand Filter Videos'
Transcripts for '9. How to do a Swirl and Dump - Biosand Filter Videos'
Document
Transcripts for '9. How to do a Swirl and Dump - Biosand Filter Videos'
Transcripts for '9. How to do a Swirl and Dump - Biosand Filter Videos'
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Latin America
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Microsoft Excel Spreadsheet
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CAWST is a Canadian charity and licensed engineering firm. We address the global need for safe drinking water and sanitation by building local knowledge and skills on household solutions people can implement themselves.