FLUVIAL SYSTEMS (POLLUTION AND PROTECTION OF WATERS)
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BTINLAND WATERS (POLLUTION AND PROTECTION OF WATERS)
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UDC504.453
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Descriptor GERFLIESSGEWÄSSER (GEWÄSSERVERUNREINIGUNG UND -SCHUTZ)
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Descriptor ENGFLUVIAL SYSTEMS (POLLUTION AND PROTECTION OF WATERS)
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Descriptor FREEAUX COURANTES (POLLUTION ET PROTECTION DES EAUX)
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Variant GERFLÜSSE (GEWÄSSERVERUNREINIGUNG UND -SCHUTZ)
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Variant GERBÄCHE (GEWÄSSERVERUNREINIGUNG UND -SCHUTZ)
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Variant ENGRIVERS (POLLUTION AND PROTECTION OF WATERS)
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Variant ENGCREEKS (POLLUTION AND PROTECTION OF WATERS)
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Variant ENGRUNNING WATERS (POLLUTION AND PROTECTION OF WATERS)
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Variant FREPOLLUTION ET PROTECTION DES EAUX COURANTES
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Variant FREFLEUVES (POLLUTION ET PROTECTION DES EAUX)
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Variant FRERIVIÈRES (POLLUTION ET PROTECTION DES EAUX)
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Variant FRECOURS D'EAU (POLLUTION ET PROTECTION DES EAUX)
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Variant FRERUISSEAUX (POLLUTION ET PROTECTION DES EAUX)
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NTRUNNING WATERS POLLUTION AND DETERIORATION (ENVIRONMENTAL PROBLEMS)
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NTRUNNING WATERS/WATER PROTECTION (ENVIRONMENTAL PROBLEMS)
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RTRUNNING WATERS (HYDROBIOLOGY AND AQUATIC ECOLOGY)
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RTPOLLUTION OF RIVERS (HYDROLOGY)