http://resources.cawst.org/package/introduction-low-cost-sanitation-manual_en This manual descibes the basic concepts of Sanitation, including p...

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http://resources.cawst.org/package/introduction-low-cost-sanitation-manual_en This manual descibes the basic concepts of Sanitation, including planning, promotion, design and construction of latrines and greywater soak pits courtesy CAWST: cheers