HYGIENE OF WATER, PROTECTION OF WATER QUALITY, CONSERVATION OF WATER RESOURCES (ENVIRONMENTAL PROTECTION)
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BTENVIRONMENTAL PROTECTION + ENVIRONMENTAL CONSERVATION
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BTWATER (ENVIRONMENTAL POLLUTION AND PROTECTION)
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UDC504.4.06
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Descriptor GERWASSERHYGIENE, SCHUTZ DER WASSERQUALITÄT, ERHALTUNG VON WASSERRESSOURCEN, GEWÄSSERHYGIENE (UMWELTSCHUTZ)
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Descriptor ENGHYGIENE OF WATER, PROTECTION OF WATER QUALITY, CONSERVATION OF WATER RESOURCES (ENVIRONMENTAL PROTECTION)
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Descriptor FREHYGIÈNE DE L'EAU, PROTECTION DE LA QUALITÉ DE L'EAU, CONSERVATION DES RESSOURCES EN EAU (PROTECTION DE L'ENVIRONNEMENT)
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Variant GERWASSER (UMWELTSCHUTZ)
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Variant GERGEWÄSSERSCHUTZ (UMWELTSCHUTZ)
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Variant GERGEWÄSSERHYGIENE (UMWELTSCHUTZ)
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Variant GERWASSERHYGIENE (UMWELTSCHUTZ)
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Variant GERSCHUTZ DER WASSERQUALITÄT (UMWELTSCHUTZ)
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Variant GERWASSERQUALITÄT/SCHUTZ DER WASSERQUALITÄT (UMWELTSCHUTZ)
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Variant GERWASSERRESSOURCEN/ERHALTUNG DER WASSERRESSOURCEN (UMWELTSCHUTZ)
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Variant ENGWATER/PROTECTION OF WATER QUALITY (ENVIRONMENTAL PROTECTION)
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Variant ENGHYDROSPHERIC ENVIRONMENT/ENVIRONMENTAL PROTECTION
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Variant ENGSAFEGUARD OF WATER RESOURCES (ENVIRONMENTAL PROTECTION)
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Variant ENGCONSERVATION OF WATER RESOURCES (ENVIRONMENTAL PROTECTION)
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Variant ENGWATER/HYGIENE OF WATER (ENVIRONMENTAL PROTECTION)
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Variant ENGWATER RESOURCES/SAFEGUARD OF WATER RESOURCES (ENVIRONMENTAL PROTECTION)
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Variant ENGWATER RESOURCES/CONSERVATION OF WATER RESOURCES (ENVIRONMENTAL PROTECTION)
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Variant ENGWATER QUALITY/PROTECTION OF WATER QUALITY (ENVIRONMENTAL PROTECTION)
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Variant ENGWATER (ENVIRONMENTAL PROTECTION)
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Variant FREQUALITÉ DE L'EAU/MESURES DE PROTECTION (PROTECTION DE L'ENVIRONNEMENT)
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Variant FREPROTECTION DE L'ENVIRONNEMENT/EAU
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Variant FREEAU/PROTECTION DE L'ENVIRONNEMENT
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Variant FRECONSERVATION DES RESSOURCES EN EAU (PROTECTION DE L'ENVIRONNEMENT)
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Variant FRERESSOURCES EN EAU/CONSERVATION DES RESSOURCES EN EAU (PROTECTION DE L'ENVIRONNEMENT)
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Variant FREHYGIÈNE DE L'EAU (PROTECTION DE L'ENVIRONNEMENT)
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Variant FREPROTECTION DE LA QUALITÉ DE L'EAU (PROTECTION DE L'ENVIRONNEMENT)
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Variant FREEAUX NATURELLES/PROTECTION DES EAUX NATURELLES (PROTECTION DE L'ENVIRONNEMENT)
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Variant FREHYDROSPHÈRE/PROTECTION DE LA HYDROSPHÈRE (PROTECTION DE L'ENVIRONNEMENT)
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Variant FREEAU/HYGIÈNE DE L'EAU, PROTECTION DES EAUX (PROTECTION DE L'ENVIRONNEMENT)
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NTRUNNING WATERS/WATER PROTECTION (ENVIRONMENTAL PROBLEMS)
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NTNATURAL WATERS/ENVIRONMENTAL MONITORING (ENVIRONMENTAL PROTECTION)
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NTOCEAN WATER PROTECTION (ENVIRONMENTAL PROBLEMS)
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NTCONSERVATION MEASURES AND RESTORATION OF NATURAL WATERS (ENVIRONMENTAL PROTECTION)
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NTGROUNDWATER PROTECTION (ENVIRONMENTAL PROBLEMS)
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NTPROTECTION OF SURFACE WATERS (ENVIRONMENTAL PROTECTION)
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NTPROTECTION OF STANDING WATERS (ENVIRONMENTAL PROBLEMS)
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NTDRINKING WATER PROTECTION (ENVIRONMENTAL PROTECTION)
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NTWATER QUALITY DATA, RECORDING AND INVENTORY OF WATER QUALITY (ENVIRONMENTAL PROTECTION)
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RTWASTEWATER + WASTEWATER TREATMENT
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RTANALYSIS, CONTROL, MANAGEMENT OF ENVIRONMENTAL POLLUTION
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RTCONSERVATION AND PROTECTION OF NATURAL RESOURCES AND RAW MATERIALS (ENVIRONMENTAL PROTECTION)
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RTWATER POLLUTION CONTROL (INDUSTRIAL HYGIENE AND ENVIRONMENTAL CONTROL ENGINEERING)
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RTENVIRONMENTAL PROTECTION + ENVIRONMENTAL PROTECTION AUTHORITIES (PUBLIC ADMINISTRATION)
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RTWATER TREATMENT + WATER SUPPLY + WATER UTILIZATION
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RTWATER WASTAGE (ENVIRONMENTAL PROBLEMS)