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Hand auger - Vonder rig

10 bytes removed, 01:08, 8 May 2015
→‎Manuals, videos and links
* A Water Handbook, Technical Guidelines Series, UNICEF, 1999 - Programming and implementation. [http://www.unicef.org/wash/files/Wat_e.pdf Download].
* [https://www.dropbox.com/s/dc2lhxx7p657i2v/WaterAid_technology_notes.pdf?dl=0 Technology notes, section 7; Tube wells and boreholes], WaterAid - An overview of human-powered drilling technologies. [http://www.wateraid.org/documents/plugin_documents/technology_notes_2008.pdf Download]. Website of [http://www.wateraid.org/uk Wateraid.org].
* Water for the World, Technical note series rws 2, USAID 1982 - Technical notes on methods of developing of groundwater, manual drilling techniques. [http://www.lifewater.org/resources/ground_water.html Website Livewater International].
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