INLAND WATERS (POLLUTION AND PROTECTION OF WATERS)
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BTWATER (ENVIRONMENTAL POLLUTION AND PROTECTION)
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UDC504.45
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Descriptor GERBINNENGEWÄSSER (GEWÄSSERVERUNREINIGUNG UND -SCHUTZ)
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Descriptor ENGINLAND WATERS (POLLUTION AND PROTECTION OF WATERS)
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Descriptor FREEAUX CONTINENTALES (POLLUTION ET PROTECTION DES EAUX)
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Variant GERSÜSSWASSER (GEWÄSSERVERUNREINIGUNG UND -SCHUTZ)
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Variant ENGFRESHWATER (POLLUTION AND PROTECTION OF WATERS)
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Variant FREEAU DOUCE (POLLUTION ET PROTECTION DES EAUX)
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Variant FREPOLLUTION ET PROTECTION DES EAUX CONTINENTALES
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NTFLUVIAL SYSTEMS (POLLUTION AND PROTECTION OF WATERS)
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NTSTILL WATERS (POLLUTION AND PROTECTION OF WATERS)
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NTSWAMPS, MARSHES (ENVIRONMENTAL POLLUTION AND PROTECTION)