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→Manuals, videos and links
===Manuals, videos and links===
*[http://www.indiawaterportal.org India Water Portal]
*[http://www.electron-sa.co.za www.electron-sa.co.za]*[http://www.nedapnaiade.com www.nedapnaiade.com]
*[http://www.safe-drinkingwater.com www.safe-drinkingwater.com]
*[http://www.purificationdeleau.com www.purificationdeleau.com]