Determination of the Water Quality Class of the River Erft around Bad Münstereifel using Biological and Chemical Methods (Biology, 1992) |
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| Markus Gleitz, Markus Hergarden, Martin Schwarz | Supervisor Karl Heuel | ||
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| Martin Schwarz, Markus Gleitz and Markus Hergarden at the regional contest | Markus Gleitz, Martin Schwarz and Markus Hergarden present their project to the jury |
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