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Entwicklung der ökologischen Gütebeurteilung aus der biologischen Gewässergütebeurteilung in den Niederlanden \ Oekologische Bewertung von Fliessgewaessern [Artikel]
Tolkamp, H.H. \ Gardeniers, J.J.P. \ Peeters, T.H.M. \ 1992
The development of biological assessment methods in The Netherlands in the past decades is described. National and regional water management policy has amplified the need for ecological assessment methods. These are being developed for five individua ...
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The development of biological water quality assessment in the Netherlands \ Hydrobiological bulletin [Artikel]
Tolkamp, H.H. \ Gardeniers, J.J.P. \ 1988
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De ontwikkeling van de biologische waterbeoordeling in Nederland : van weten naar meten \ Hydrobiologisch onderzoek in Nederland : fundamentele en toepassingsgerichte aspekten [Hoofdstuk uit boek]
Tolkamp, H.H. \ Gardeniers, J.J.P. \ 1988
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pH changes over two centuries in three Dutch moorland pools \ Air pollution and ecosystems : proceedings of an international symposium held in Grenoble, France, 18 - 22 May 1987 [Hoofdstuk uit boek]
Dam, H. van \ Geel, B. van \ Wijk, A. van der \ 1988
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Invloed van de grootte van de taludhelling van diepe putten op stratificatie [Boek]
Claessen, F.A.M. \ 1987
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