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Sludging - Asian sludge

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→‎Acknowledgements

===Acknowledgements===

* The basis for the material on this page was obtained from a desk study shortly to be published on the website of the [http://www.practicafoundationpractica.nl/ org Practica Foundation], and from the [http://www.rural-water-supply.net/ Rural Water Supply Network], and specifically its [http://www.rural-water-supply.net/en/implementation/manual-drilling manual drilling section].

* [http://www.lboro.ac.uk/well/resources/technical-briefs/43-simple-drilling-methods.pdf 43. Simple drilling methods.] WEDC.

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