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File:Aerated pond.png

198 bytes added, 21:10, 3 March 2009
This picture can be used in presentations and non-profit published material, provided the source is qouted as "Sandec/Eawag". For commercial publications please contact Sandec through www.sandec.ch.
This picture can be used in presentations and non-profit published material, provided the source is qouted as "Sandec/Eawag". For commercial publications please contact Sandec through www.sandec.ch.
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