File:045SketchPortfolio UJ MartinBolton.JPG: Revision history

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11 January 2013

  • curprev 11:4511:45, 11 January 2013‎ Martin Bolton talk contribs‎ 292 bytes +292‎ 045SketchPortfolio_UJ_MartinBolton Exploration of the possibility for the filter unit to be suspended from above. This would make it a lot more difficult for insects/animals to contaminate the filtered water. Lowering the filter brings complications w...
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