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Een hydrobiologische visie op het Indicatief Meerjaren Programma \ Vakblad voor biologen [Artikel]
Higler, L.W.G. \ 1983
Op korte termijn zal inhoud gegeven moeten worden aan de 'natuurlijke' toestand van oppervlaktewater en aan de biologische normen, waarmee het kwalitatieve waterbeheer uit de voeten kan
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The significance of desmids as indicators of the trophic status of freshwaters \ Schweizerische Zeitschrift fuer Hydrologie, Hydrobiologie, Limnologie, Fischereiwissenschaft und Abwasserreinigung = Revue suisse d' Hydrologie, Hydrobiologie, limnologie, peche et pisciculture et epuration des eaux polluees [Artikel]
Coesèl, P.F.M. \ 1983
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Nutrient dynamics in small mesotrophic fens surrounded by cultivated land. 1. Productivity and nutrient uptake by the vegetation in relation to the flow of eutrophicated ground water \ Oecologia [Artikel]
Verhoeven, J.T.A. \ Beek, S. van \ Dekker, M. \ 1983
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