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Groundwater - Rota sludge well drilling

46 bytes added, 10:31, 16 June 2008
External links
* [http://www.practicafoundation.nl www.practicafoundation.nl]
* General info on well drilling [http://www.rwsn.org www.rwsn.org]
* [http://nl.youtube.com/watch?v=MvebFHCjCvk]
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